Asp.net Dropdownlist selected index in changed

Discussion in 'ASP .Net' started by Santosh, Sep 4, 2006.

  1. Santosh

    Santosh Guest

    Dear all ,

    i am writting following code.

    if(Page.IsPostBack==false)
    {
    try
    {

    BindSectionDropDownlist();
    BindSubSectionDropDownlist();
    BindSectionLineDropDownlist();
    }

    catch(Exception ex)
    {
    Response.Write("<script language=Javascript>alert('"+
    ex.Message.ToString()+"');</script>");
    }
    }
    }


    // Defination of BindSectionDropDownList


    private void BindSectionDropDownlist()
    {
    DataView dv = new DataView();
    dv = objSectionMaster.GetSectionRecForReports();
    reportCategory_Dropdownlist.DataTextField="SectionDesc";
    reportCategory_Dropdownlist.DataValueField ="sectionId";
    reportCategory_Dropdownlist.DataSource=dv;
    reportCategory_Dropdownlist.DataBind();
    reportCategory_Dropdownlist.Items.Insert(0,new
    ListItem("--Select--","--Select--"));

    //reportCategoty_DropDownList.SelectedIndex=-1;
    }


    private void BindSubSectionDropDownlist()
    {
    DataView dv = new DataView();
    dv = objSectionMaster.GetSubSectionRecReports();
    subSection_Dropdownlist.DataTextField="SectionDesc";
    subSection_Dropdownlist.DataValueField ="sectionId";
    subSection_Dropdownlist.DataSource=dv;
    subSection_Dropdownlist.DataBind();
    subSection_Dropdownlist.Items.Insert(0,new
    ListItem("--Select--","--Select--"));

    //reportCategoty_DropDownList.SelectedIndex=-1;
    }


    private void BindSectionLineDropDownlist()
    {

    DataView dv = new DataView();
    dv = objSectionMaster.GetSectionLineRecReports();
    sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    sectionLineDesc_DropDownList.DataSource= dv;
    sectionLineDesc_DropDownList.DataBind();

    sectionLineDesc_DropDownList.Items.Insert(0,new
    ListItem("--Select--","-1"));

    //reportCategoty_DropDownList.SelectedIndex=-1;
    }

    private void search_Button_Click(object sender, System.EventArgs e)
    {
    selectQuery();
    }

    selectQuery();
    {

    //Code for further processing of on the basis of
    sectionLineDesc_DropDownList selection


    }

    selection index of first two dropdownlist is not changed but
    the third selected index of third dropdownlist is changed
    when i am click on search button.


    any help will be greatly appreciated.
    Santosh, Sep 4, 2006
    #1
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  2. Santosh

    Tim_Mac Guest

    hi,
    first it would be useful to describe what you are trying to do. code is
    helpful but it's no good unless you describe what you are trying to do with
    it!

    you say that the selected index of the first two dropdownlists are not
    changed, are they supposed to change? in response to the user? or your
    code?
    you have this line of code in each bind method:
    //reportCategoty_DropDownList.SelectedIndex=-1;
    is it supposed to be uncommented?

    happy to help if you can provide more info
    tim


    "Santosh" <> wrote in message
    news:...
    > Dear all ,
    >
    > i am writting following code.
    >
    > if(Page.IsPostBack==false)
    > {
    > try
    > {
    >
    > BindSectionDropDownlist();
    > BindSubSectionDropDownlist();
    > BindSectionLineDropDownlist();
    > }
    >
    > catch(Exception ex)
    > {
    > Response.Write("<script language=Javascript>alert('"+
    > ex.Message.ToString()+"');</script>");
    > }
    > }
    > }
    >
    >
    > // Defination of BindSectionDropDownList
    >
    >
    > private void BindSectionDropDownlist()
    > {
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSectionRecForReports();
    > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    > reportCategory_Dropdownlist.DataValueField ="sectionId";
    > reportCategory_Dropdownlist.DataSource=dv;
    > reportCategory_Dropdownlist.DataBind();
    > reportCategory_Dropdownlist.Items.Insert(0,new
    > ListItem("--Select--","--Select--"));
    >
    > //reportCategoty_DropDownList.SelectedIndex=-1;
    > }
    >
    >
    > private void BindSubSectionDropDownlist()
    > {
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSubSectionRecReports();
    > subSection_Dropdownlist.DataTextField="SectionDesc";
    > subSection_Dropdownlist.DataValueField ="sectionId";
    > subSection_Dropdownlist.DataSource=dv;
    > subSection_Dropdownlist.DataBind();
    > subSection_Dropdownlist.Items.Insert(0,new
    > ListItem("--Select--","--Select--"));
    >
    > //reportCategoty_DropDownList.SelectedIndex=-1;
    > }
    >
    >
    > private void BindSectionLineDropDownlist()
    > {
    >
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSectionLineRecReports();
    > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    > sectionLineDesc_DropDownList.DataSource= dv;
    > sectionLineDesc_DropDownList.DataBind();
    >
    > sectionLineDesc_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","-1"));
    >
    > //reportCategoty_DropDownList.SelectedIndex=-1;
    > }
    >
    > private void search_Button_Click(object sender, System.EventArgs e)
    > {
    > selectQuery();
    > }
    >
    > selectQuery();
    > {
    >
    > //Code for further processing of on the basis of
    > sectionLineDesc_DropDownList selection
    >
    >
    > }
    >
    > selection index of first two dropdownlist is not changed but
    > the third selected index of third dropdownlist is changed
    > when i am click on search button.
    >
    >
    > any help will be greatly appreciated.
    >
    Tim_Mac, Sep 6, 2006
    #2
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  3. Santosh

    Santosh Guest

    The description is ,

    i am having three dropdownlists when i am selected first item from list
    it will display all related items in the next drop down list when i am
    choose item from second drop down list in third all items filled
    related to second item selection. and in the selection of third
    dropdown list item text i will be display result.

    eg.i am having first dropdownlist it will contains all country list
    when i am choose one country it will display all states related to that
    country. if i am selected state from list it will display all districts
    related to the selected states. and on the selection of district i will
    be search another information.

    Tim_Mac wrote:
    > hi,
    > first it would be useful to describe what you are trying to do. code is
    > helpful but it's no good unless you describe what you are trying to do with
    > it!
    >
    > you say that the selected index of the first two dropdownlists are not
    > changed, are they supposed to change? in response to the user? or your
    > code?
    > you have this line of code in each bind method:
    > //reportCategoty_DropDownList.SelectedIndex=-1;
    > is it supposed to be uncommented?
    >
    > happy to help if you can provide more info
    > tim
    >
    >
    > "Santosh" <> wrote in message
    > news:...
    > > Dear all ,
    > >
    > > i am writting following code.
    > >
    > > if(Page.IsPostBack==false)
    > > {
    > > try
    > > {
    > >
    > > BindSectionDropDownlist();
    > > BindSubSectionDropDownlist();
    > > BindSectionLineDropDownlist();
    > > }
    > >
    > > catch(Exception ex)
    > > {
    > > Response.Write("<script language=Javascript>alert('"+
    > > ex.Message.ToString()+"');</script>");
    > > }
    > > }
    > > }
    > >
    > >
    > > // Defination of BindSectionDropDownList
    > >
    > >
    > > private void BindSectionDropDownlist()
    > > {
    > > DataView dv = new DataView();
    > > dv = objSectionMaster.GetSectionRecForReports();
    > > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    > > reportCategory_Dropdownlist.DataValueField ="sectionId";
    > > reportCategory_Dropdownlist.DataSource=dv;
    > > reportCategory_Dropdownlist.DataBind();
    > > reportCategory_Dropdownlist.Items.Insert(0,new
    > > ListItem("--Select--","--Select--"));
    > >
    > > //reportCategoty_DropDownList.SelectedIndex=-1;
    > > }
    > >
    > >
    > > private void BindSubSectionDropDownlist()
    > > {
    > > DataView dv = new DataView();
    > > dv = objSectionMaster.GetSubSectionRecReports();
    > > subSection_Dropdownlist.DataTextField="SectionDesc";
    > > subSection_Dropdownlist.DataValueField ="sectionId";
    > > subSection_Dropdownlist.DataSource=dv;
    > > subSection_Dropdownlist.DataBind();
    > > subSection_Dropdownlist.Items.Insert(0,new
    > > ListItem("--Select--","--Select--"));
    > >
    > > //reportCategoty_DropDownList.SelectedIndex=-1;
    > > }
    > >
    > >
    > > private void BindSectionLineDropDownlist()
    > > {
    > >
    > > DataView dv = new DataView();
    > > dv = objSectionMaster.GetSectionLineRecReports();
    > > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    > > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    > > sectionLineDesc_DropDownList.DataSource= dv;
    > > sectionLineDesc_DropDownList.DataBind();
    > >
    > > sectionLineDesc_DropDownList.Items.Insert(0,new
    > > ListItem("--Select--","-1"));
    > >
    > > //reportCategoty_DropDownList.SelectedIndex=-1;
    > > }
    > >
    > > private void search_Button_Click(object sender, System.EventArgs e)
    > > {
    > > selectQuery();
    > > }
    > >
    > > selectQuery();
    > > {
    > >
    > > //Code for further processing of on the basis of
    > > sectionLineDesc_DropDownList selection
    > >
    > >
    > > }
    > >
    > > selection index of first two dropdownlist is not changed but
    > > the third selected index of third dropdownlist is changed
    > > when i am click on search button.
    > >
    > >
    > > any help will be greatly appreciated.
    > >
    Santosh, Sep 7, 2006
    #3
  4. Santosh

    Tim_Mac Guest

    typically this is done via AutoPostBack dropdownlists. it seems strange
    that you bind all 3 lists on the first Page_Load, since you can't know what
    to populate lists 2 and 3 with until a selection has been made with list 1.

    normally i would do something like this (pseudo-code):
    First Page_Load (!PostBack) > Bind List 1 (lists 2 and 3 remain empty)
    List1_SelectedIndex_Changed > Bind List 2
    List2_SelectedIndex_Changed > Bind List 3
    List3_SelectedIndex_Changed > Search whatever

    have you got AutoPostBack=true on all the lists? also, you haven't posted
    the SelectedIndexChanged events. it's very difficult to piece together your
    situation with only a part of the code. if you post all the relevant code i
    will be happy to take a look again.

    tim


    "Santosh" <> wrote in message
    news:...
    > The description is ,
    >
    > i am having three dropdownlists when i am selected first item from list
    > it will display all related items in the next drop down list when i am
    > choose item from second drop down list in third all items filled
    > related to second item selection. and in the selection of third
    > dropdown list item text i will be display result.
    >
    > eg.i am having first dropdownlist it will contains all country list
    > when i am choose one country it will display all states related to that
    > country. if i am selected state from list it will display all districts
    > related to the selected states. and on the selection of district i will
    > be search another information.
    >
    > Tim_Mac wrote:
    >> hi,
    >> first it would be useful to describe what you are trying to do. code is
    >> helpful but it's no good unless you describe what you are trying to do
    >> with
    >> it!
    >>
    >> you say that the selected index of the first two dropdownlists are not
    >> changed, are they supposed to change? in response to the user? or your
    >> code?
    >> you have this line of code in each bind method:
    >> //reportCategoty_DropDownList.SelectedIndex=-1;
    >> is it supposed to be uncommented?
    >>
    >> happy to help if you can provide more info
    >> tim
    >>
    >>
    >> "Santosh" <> wrote in message
    >> news:...
    >> > Dear all ,
    >> >
    >> > i am writting following code.
    >> >
    >> > if(Page.IsPostBack==false)
    >> > {
    >> > try
    >> > {
    >> >
    >> > BindSectionDropDownlist();
    >> > BindSubSectionDropDownlist();
    >> > BindSectionLineDropDownlist();
    >> > }
    >> >
    >> > catch(Exception ex)
    >> > {
    >> > Response.Write("<script language=Javascript>alert('"+
    >> > ex.Message.ToString()+"');</script>");
    >> > }
    >> > }
    >> > }
    >> >
    >> >
    >> > // Defination of BindSectionDropDownList
    >> >
    >> >
    >> > private void BindSectionDropDownlist()
    >> > {
    >> > DataView dv = new DataView();
    >> > dv = objSectionMaster.GetSectionRecForReports();
    >> > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    >> > reportCategory_Dropdownlist.DataValueField ="sectionId";
    >> > reportCategory_Dropdownlist.DataSource=dv;
    >> > reportCategory_Dropdownlist.DataBind();
    >> > reportCategory_Dropdownlist.Items.Insert(0,new
    >> > ListItem("--Select--","--Select--"));
    >> >
    >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> > }
    >> >
    >> >
    >> > private void BindSubSectionDropDownlist()
    >> > {
    >> > DataView dv = new DataView();
    >> > dv = objSectionMaster.GetSubSectionRecReports();
    >> > subSection_Dropdownlist.DataTextField="SectionDesc";
    >> > subSection_Dropdownlist.DataValueField ="sectionId";
    >> > subSection_Dropdownlist.DataSource=dv;
    >> > subSection_Dropdownlist.DataBind();
    >> > subSection_Dropdownlist.Items.Insert(0,new
    >> > ListItem("--Select--","--Select--"));
    >> >
    >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> > }
    >> >
    >> >
    >> > private void BindSectionLineDropDownlist()
    >> > {
    >> >
    >> > DataView dv = new DataView();
    >> > dv = objSectionMaster.GetSectionLineRecReports();
    >> > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    >> > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    >> > sectionLineDesc_DropDownList.DataSource= dv;
    >> > sectionLineDesc_DropDownList.DataBind();
    >> >
    >> > sectionLineDesc_DropDownList.Items.Insert(0,new
    >> > ListItem("--Select--","-1"));
    >> >
    >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> > }
    >> >
    >> > private void search_Button_Click(object sender, System.EventArgs e)
    >> > {
    >> > selectQuery();
    >> > }
    >> >
    >> > selectQuery();
    >> > {
    >> >
    >> > //Code for further processing of on the basis of
    >> > sectionLineDesc_DropDownList selection
    >> >
    >> >
    >> > }
    >> >
    >> > selection index of first two dropdownlist is not changed but
    >> > the third selected index of third dropdownlist is changed
    >> > when i am click on search button.
    >> >
    >> >
    >> > any help will be greatly appreciated.
    >> >

    >
    Tim_Mac, Sep 8, 2006
    #4
  5. Santosh

    Santosh Guest

    Here is code ..


    private void Page_Load(object sender, System.EventArgs e)
    {
    // Put user code to initialize the page here
    if(!Page.IsPostBack)
    {
    try
    {
    BindSectionDropDownlist();
    BindSubSectionDropDownlist();
    BindSectionLineDropDownlist();
    }

    catch(Exception ex)
    {
    Response.Write("<script language=Javascript>alert('"+
    ex.Message.ToString()+"');</script>");
    }
    }
    }


    private void BindSectionDropDownlist()
    {
    DataView dv = new DataView();
    dv = objSectionMaster.GetSectionRecForReports();

    section_DropDownList.DataTextField="SectionDesc";
    section_DropDownList.DataValueField ="sectionId";
    section_DropDownList.DataSource=dv;
    section_DropDownList.DataBind();
    section_DropDownList.Items.Insert(0,new
    ListItem("--Select--","--Select--"));

    }


    private void BindSubSectionDropDownlist()
    {
    DataView dv = new DataView();
    dv = objSectionMaster.GetSubSectionRecReports();
    subSection_DropDownList.DataTextField="SectionDesc";
    subSection_DropDownList.DataValueField ="sectionId";
    subSection_DropDownList.DataSource=dv;
    subSection_DropDownList.DataBind();
    subSection_DropDownList.Items.Insert(0,new
    ListItem("--Select--","--Select--"));

    }



    private void BindSectionLineDropDownlist()
    {

    DataView dv = new DataView();
    dv = objSectionMaster.GetSectionLineRecReports();
    sectionLine_DropDownList.DataTextField="SectionLineDescription";
    sectionLine_DropDownList.DataValueField ="SectionLineId";
    sectionLine_DropDownList.DataSource= dv;
    sectionLine_DropDownList.DataBind();

    sectionLine_DropDownList.Items.Insert(0,new
    ListItem("--Select--","-1"));


    }

    private void section_DropDownList_SelectedIndexChanged(object sender,
    System.EventArgs e)
    {
    try
    {
    DataSet ds = new DataSet();
    ds =
    objSectionMaster.GetSubSectionRecForReports1(Convert.ToInt32(section_DropDownList.SelectedValue));
    subSection_DropDownList.DataTextField="SectionDesc";
    subSection_DropDownList.DataValueField ="SectionId";
    subSection_DropDownList.DataSource=ds;
    subSection_DropDownList.DataBind();


    }
    catch(Exception ex)
    {
    Response.Write("<script language=javascript> alert('"+
    ex.Message.ToString()+"');</script>");
    }



    private void subSection_DropDownList_SelectedIndexChanged(object
    sender, System.EventArgs e)
    {
    try
    {
    if(subSection_DropDownList.SelectedValue=="--Select--")
    {
    return;
    }

    DataView dv = new DataView();
    dv =
    objSectionMaster.GetSectionLinesRecForReports(Convert.ToInt32(subSection_DropDownList.SelectedValue));
    sectionLine_DropDownList.DataTextField="SectionLineDescription";
    sectionLine_DropDownList.DataValueField ="SectionId";
    sectionLine_DropDownList.DataSource=dv;
    sectionLine_DropDownList.DataBind();

    }
    catch(Exception ex)
    {
    Response.Write("<script language=javascript> alert('"+
    ex.Message.ToString()+"');</script>");
    }
    }


    private void search_Button_Click(object sender, System.EventArgs e)
    {
    SearchCondition();
    }


    Private void SearchCondition ();
    {
    Code for Searching according to the selection of third dropdown
    list.
    }


    Regards

    Shinde Santosh.


    Tim_Mac wrote:
    > typically this is done via AutoPostBack dropdownlists. it seems strange
    > that you bind all 3 lists on the first Page_Load, since you can't know what
    > to populate lists 2 and 3 with until a selection has been made with list 1.
    >
    > normally i would do something like this (pseudo-code):
    > First Page_Load (!PostBack) > Bind List 1 (lists 2 and 3 remain empty)
    > List1_SelectedIndex_Changed > Bind List 2
    > List2_SelectedIndex_Changed > Bind List 3
    > List3_SelectedIndex_Changed > Search whatever
    >
    > have you got AutoPostBack=true on all the lists? also, you haven't posted
    > the SelectedIndexChanged events. it's very difficult to piece together your
    > situation with only a part of the code. if you post all the relevant code i
    > will be happy to take a look again.
    >
    > tim
    >
    >
    > "Santosh" <> wrote in message
    > news:...
    > > The description is ,
    > >
    > > i am having three dropdownlists when i am selected first item from list
    > > it will display all related items in the next drop down list when i am
    > > choose item from second drop down list in third all items filled
    > > related to second item selection. and in the selection of third
    > > dropdown list item text i will be display result.
    > >
    > > eg.i am having first dropdownlist it will contains all country list
    > > when i am choose one country it will display all states related to that
    > > country. if i am selected state from list it will display all districts
    > > related to the selected states. and on the selection of district i will
    > > be search another information.
    > >
    > > Tim_Mac wrote:
    > >> hi,
    > >> first it would be useful to describe what you are trying to do. code is
    > >> helpful but it's no good unless you describe what you are trying to do
    > >> with
    > >> it!
    > >>
    > >> you say that the selected index of the first two dropdownlists are not
    > >> changed, are they supposed to change? in response to the user? or your
    > >> code?
    > >> you have this line of code in each bind method:
    > >> //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> is it supposed to be uncommented?
    > >>
    > >> happy to help if you can provide more info
    > >> tim
    > >>
    > >>
    > >> "Santosh" <> wrote in message
    > >> news:...
    > >> > Dear all ,
    > >> >
    > >> > i am writting following code.
    > >> >
    > >> > if(Page.IsPostBack==false)
    > >> > {
    > >> > try
    > >> > {
    > >> >
    > >> > BindSectionDropDownlist();
    > >> > BindSubSectionDropDownlist();
    > >> > BindSectionLineDropDownlist();
    > >> > }
    > >> >
    > >> > catch(Exception ex)
    > >> > {
    > >> > Response.Write("<script language=Javascript>alert('"+
    > >> > ex.Message.ToString()+"');</script>");
    > >> > }
    > >> > }
    > >> > }
    > >> >
    > >> >
    > >> > // Defination of BindSectionDropDownList
    > >> >
    > >> >
    > >> > private void BindSectionDropDownlist()
    > >> > {
    > >> > DataView dv = new DataView();
    > >> > dv = objSectionMaster.GetSectionRecForReports();
    > >> > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    > >> > reportCategory_Dropdownlist.DataValueField ="sectionId";
    > >> > reportCategory_Dropdownlist.DataSource=dv;
    > >> > reportCategory_Dropdownlist.DataBind();
    > >> > reportCategory_Dropdownlist.Items.Insert(0,new
    > >> > ListItem("--Select--","--Select--"));
    > >> >
    > >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> > }
    > >> >
    > >> >
    > >> > private void BindSubSectionDropDownlist()
    > >> > {
    > >> > DataView dv = new DataView();
    > >> > dv = objSectionMaster.GetSubSectionRecReports();
    > >> > subSection_Dropdownlist.DataTextField="SectionDesc";
    > >> > subSection_Dropdownlist.DataValueField ="sectionId";
    > >> > subSection_Dropdownlist.DataSource=dv;
    > >> > subSection_Dropdownlist.DataBind();
    > >> > subSection_Dropdownlist.Items.Insert(0,new
    > >> > ListItem("--Select--","--Select--"));
    > >> >
    > >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> > }
    > >> >
    > >> >
    > >> > private void BindSectionLineDropDownlist()
    > >> > {
    > >> >
    > >> > DataView dv = new DataView();
    > >> > dv = objSectionMaster.GetSectionLineRecReports();
    > >> > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    > >> > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    > >> > sectionLineDesc_DropDownList.DataSource= dv;
    > >> > sectionLineDesc_DropDownList.DataBind();
    > >> >
    > >> > sectionLineDesc_DropDownList.Items.Insert(0,new
    > >> > ListItem("--Select--","-1"));
    > >> >
    > >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> > }
    > >> >
    > >> > private void search_Button_Click(object sender, System.EventArgs e)
    > >> > {
    > >> > selectQuery();
    > >> > }
    > >> >
    > >> > selectQuery();
    > >> > {
    > >> >
    > >> > //Code for further processing of on the basis of
    > >> > sectionLineDesc_DropDownList selection
    > >> >
    > >> >
    > >> > }
    > >> >
    > >> > selection index of first two dropdownlist is not changed but
    > >> > the third selected index of third dropdownlist is changed
    > >> > when i am click on search button.
    > >> >
    > >> >
    > >> > any help will be greatly appreciated.
    > >> >

    > >
    Santosh, Sep 9, 2006
    #5
  6. Santosh

    Tim_Mac Guest

    hi Santosh,
    your code looks normal. in your original post, you say

    "selection index of first two dropdownlist is not changed but
    the third selected index of third dropdownlist is changed
    when i am click on search button."

    i am assuming that you have EnableViewStated = true and AutoPostBack=true
    set on all 3 drop down lists, and that the SelectedIndexChanged events are
    correctly registered for all 3 menus, and that these events are firing
    correctly.
    if this is the case then when you change List1, it will postback and the
    selectedIndex of List1 should stay on what you selected. It should also
    stay for all future postbacks unless you re-bind the list. Does this
    happen?

    when you click on the search button, the SelectedIndex of all 3 lists should
    be the same as you left it. from the description of your steps below, can
    you say exactly where your code behaves unexpectedly:

    Step 1: change List1
    Step 2: change List2
    Step 3: change List3
    Step 4: click search.

    tim



    "Santosh" <> wrote in message
    news:...
    > Here is code ..
    >
    >
    > private void Page_Load(object sender, System.EventArgs e)
    > {
    > // Put user code to initialize the page here
    > if(!Page.IsPostBack)
    > {
    > try
    > {
    > BindSectionDropDownlist();
    > BindSubSectionDropDownlist();
    > BindSectionLineDropDownlist();
    > }
    >
    > catch(Exception ex)
    > {
    > Response.Write("<script language=Javascript>alert('"+
    > ex.Message.ToString()+"');</script>");
    > }
    > }
    > }
    >
    >
    > private void BindSectionDropDownlist()
    > {
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSectionRecForReports();
    >
    > section_DropDownList.DataTextField="SectionDesc";
    > section_DropDownList.DataValueField ="sectionId";
    > section_DropDownList.DataSource=dv;
    > section_DropDownList.DataBind();
    > section_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","--Select--"));
    >
    > }
    >
    >
    > private void BindSubSectionDropDownlist()
    > {
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSubSectionRecReports();
    > subSection_DropDownList.DataTextField="SectionDesc";
    > subSection_DropDownList.DataValueField ="sectionId";
    > subSection_DropDownList.DataSource=dv;
    > subSection_DropDownList.DataBind();
    > subSection_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","--Select--"));
    >
    > }
    >
    >
    >
    > private void BindSectionLineDropDownlist()
    > {
    >
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSectionLineRecReports();
    > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > sectionLine_DropDownList.DataValueField ="SectionLineId";
    > sectionLine_DropDownList.DataSource= dv;
    > sectionLine_DropDownList.DataBind();
    >
    > sectionLine_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","-1"));
    >
    >
    > }
    >
    > private void section_DropDownList_SelectedIndexChanged(object sender,
    > System.EventArgs e)
    > {
    > try
    > {
    > DataSet ds = new DataSet();
    > ds =
    > objSectionMaster.GetSubSectionRecForReports1(Convert.ToInt32(section_DropDownList.SelectedValue));
    > subSection_DropDownList.DataTextField="SectionDesc";
    > subSection_DropDownList.DataValueField ="SectionId";
    > subSection_DropDownList.DataSource=ds;
    > subSection_DropDownList.DataBind();
    >
    >
    > }
    > catch(Exception ex)
    > {
    > Response.Write("<script language=javascript> alert('"+
    > ex.Message.ToString()+"');</script>");
    > }
    >
    >
    >
    > private void subSection_DropDownList_SelectedIndexChanged(object
    > sender, System.EventArgs e)
    > {
    > try
    > {
    > if(subSection_DropDownList.SelectedValue=="--Select--")
    > {
    > return;
    > }
    >
    > DataView dv = new DataView();
    > dv =
    > objSectionMaster.GetSectionLinesRecForReports(Convert.ToInt32(subSection_DropDownList.SelectedValue));
    > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > sectionLine_DropDownList.DataValueField ="SectionId";
    > sectionLine_DropDownList.DataSource=dv;
    > sectionLine_DropDownList.DataBind();
    >
    > }
    > catch(Exception ex)
    > {
    > Response.Write("<script language=javascript> alert('"+
    > ex.Message.ToString()+"');</script>");
    > }
    > }
    >
    >
    > private void search_Button_Click(object sender, System.EventArgs e)
    > {
    > SearchCondition();
    > }
    >
    >
    > Private void SearchCondition ();
    > {
    > Code for Searching according to the selection of third dropdown
    > list.
    > }
    >
    >
    > Regards
    >
    > Shinde Santosh.
    >
    >
    > Tim_Mac wrote:
    >> typically this is done via AutoPostBack dropdownlists. it seems strange
    >> that you bind all 3 lists on the first Page_Load, since you can't know
    >> what
    >> to populate lists 2 and 3 with until a selection has been made with list
    >> 1.
    >>
    >> normally i would do something like this (pseudo-code):
    >> First Page_Load (!PostBack) > Bind List 1 (lists 2 and 3 remain empty)
    >> List1_SelectedIndex_Changed > Bind List 2
    >> List2_SelectedIndex_Changed > Bind List 3
    >> List3_SelectedIndex_Changed > Search whatever
    >>
    >> have you got AutoPostBack=true on all the lists? also, you haven't
    >> posted
    >> the SelectedIndexChanged events. it's very difficult to piece together
    >> your
    >> situation with only a part of the code. if you post all the relevant
    >> code i
    >> will be happy to take a look again.
    >>
    >> tim
    >>
    >>
    >> "Santosh" <> wrote in message
    >> news:...
    >> > The description is ,
    >> >
    >> > i am having three dropdownlists when i am selected first item from list
    >> > it will display all related items in the next drop down list when i am
    >> > choose item from second drop down list in third all items filled
    >> > related to second item selection. and in the selection of third
    >> > dropdown list item text i will be display result.
    >> >
    >> > eg.i am having first dropdownlist it will contains all country list
    >> > when i am choose one country it will display all states related to that
    >> > country. if i am selected state from list it will display all districts
    >> > related to the selected states. and on the selection of district i will
    >> > be search another information.
    >> >
    >> > Tim_Mac wrote:
    >> >> hi,
    >> >> first it would be useful to describe what you are trying to do. code
    >> >> is
    >> >> helpful but it's no good unless you describe what you are trying to do
    >> >> with
    >> >> it!
    >> >>
    >> >> you say that the selected index of the first two dropdownlists are not
    >> >> changed, are they supposed to change? in response to the user? or
    >> >> your
    >> >> code?
    >> >> you have this line of code in each bind method:
    >> >> //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> is it supposed to be uncommented?
    >> >>
    >> >> happy to help if you can provide more info
    >> >> tim
    >> >>
    >> >>
    >> >> "Santosh" <> wrote in message
    >> >> news:...
    >> >> > Dear all ,
    >> >> >
    >> >> > i am writting following code.
    >> >> >
    >> >> > if(Page.IsPostBack==false)
    >> >> > {
    >> >> > try
    >> >> > {
    >> >> >
    >> >> > BindSectionDropDownlist();
    >> >> > BindSubSectionDropDownlist();
    >> >> > BindSectionLineDropDownlist();
    >> >> > }
    >> >> >
    >> >> > catch(Exception ex)
    >> >> > {
    >> >> > Response.Write("<script language=Javascript>alert('"+
    >> >> > ex.Message.ToString()+"');</script>");
    >> >> > }
    >> >> > }
    >> >> > }
    >> >> >
    >> >> >
    >> >> > // Defination of BindSectionDropDownList
    >> >> >
    >> >> >
    >> >> > private void BindSectionDropDownlist()
    >> >> > {
    >> >> > DataView dv = new DataView();
    >> >> > dv = objSectionMaster.GetSectionRecForReports();
    >> >> > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    >> >> > reportCategory_Dropdownlist.DataValueField ="sectionId";
    >> >> > reportCategory_Dropdownlist.DataSource=dv;
    >> >> > reportCategory_Dropdownlist.DataBind();
    >> >> > reportCategory_Dropdownlist.Items.Insert(0,new
    >> >> > ListItem("--Select--","--Select--"));
    >> >> >
    >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> > }
    >> >> >
    >> >> >
    >> >> > private void BindSubSectionDropDownlist()
    >> >> > {
    >> >> > DataView dv = new DataView();
    >> >> > dv = objSectionMaster.GetSubSectionRecReports();
    >> >> > subSection_Dropdownlist.DataTextField="SectionDesc";
    >> >> > subSection_Dropdownlist.DataValueField ="sectionId";
    >> >> > subSection_Dropdownlist.DataSource=dv;
    >> >> > subSection_Dropdownlist.DataBind();
    >> >> > subSection_Dropdownlist.Items.Insert(0,new
    >> >> > ListItem("--Select--","--Select--"));
    >> >> >
    >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> > }
    >> >> >
    >> >> >
    >> >> > private void BindSectionLineDropDownlist()
    >> >> > {
    >> >> >
    >> >> > DataView dv = new DataView();
    >> >> > dv = objSectionMaster.GetSectionLineRecReports();
    >> >> > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    >> >> > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    >> >> > sectionLineDesc_DropDownList.DataSource= dv;
    >> >> > sectionLineDesc_DropDownList.DataBind();
    >> >> >
    >> >> > sectionLineDesc_DropDownList.Items.Insert(0,new
    >> >> > ListItem("--Select--","-1"));
    >> >> >
    >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> > }
    >> >> >
    >> >> > private void search_Button_Click(object sender, System.EventArgs e)
    >> >> > {
    >> >> > selectQuery();
    >> >> > }
    >> >> >
    >> >> > selectQuery();
    >> >> > {
    >> >> >
    >> >> > //Code for further processing of on the basis of
    >> >> > sectionLineDesc_DropDownList selection
    >> >> >
    >> >> >
    >> >> > }
    >> >> >
    >> >> > selection index of first two dropdownlist is not changed but
    >> >> > the third selected index of third dropdownlist is changed
    >> >> > when i am click on search button.
    >> >> >
    >> >> >
    >> >> > any help will be greatly appreciated.
    >> >> >
    >> >

    >
    Tim_Mac, Sep 11, 2006
    #6
  7. Santosh

    Santosh Guest

    Dear Tim

    The selected index of first two lists remain same but only thirds are
    change it change on
    change List3 and and click search also.

    please help me. what exactely wrong happen.


    regards
    Santosh



    Tim_Mac wrote:
    > hi Santosh,
    > your code looks normal. in your original post, you say
    >
    > "selection index of first two dropdownlist is not changed but
    > the third selected index of third dropdownlist is changed
    > when i am click on search button."
    >
    > i am assuming that you have EnableViewStated = true and AutoPostBack=true
    > set on all 3 drop down lists, and that the SelectedIndexChanged events are
    > correctly registered for all 3 menus, and that these events are firing
    > correctly.
    > if this is the case then when you change List1, it will postback and the
    > selectedIndex of List1 should stay on what you selected. It should also
    > stay for all future postbacks unless you re-bind the list. Does this
    > happen?
    >
    > when you click on the search button, the SelectedIndex of all 3 lists should
    > be the same as you left it. from the description of your steps below, can
    > you say exactly where your code behaves unexpectedly:
    >
    > Step 1: change List1
    > Step 2: change List2
    > Step 3: change List3
    > Step 4: click search.
    >
    > tim
    >
    >
    >
    > "Santosh" <> wrote in message
    > news:...
    > > Here is code ..
    > >
    > >
    > > private void Page_Load(object sender, System.EventArgs e)
    > > {
    > > // Put user code to initialize the page here
    > > if(!Page.IsPostBack)
    > > {
    > > try
    > > {
    > > BindSectionDropDownlist();
    > > BindSubSectionDropDownlist();
    > > BindSectionLineDropDownlist();
    > > }
    > >
    > > catch(Exception ex)
    > > {
    > > Response.Write("<script language=Javascript>alert('"+
    > > ex.Message.ToString()+"');</script>");
    > > }
    > > }
    > > }
    > >
    > >
    > > private void BindSectionDropDownlist()
    > > {
    > > DataView dv = new DataView();
    > > dv = objSectionMaster.GetSectionRecForReports();
    > >
    > > section_DropDownList.DataTextField="SectionDesc";
    > > section_DropDownList.DataValueField ="sectionId";
    > > section_DropDownList.DataSource=dv;
    > > section_DropDownList.DataBind();
    > > section_DropDownList.Items.Insert(0,new
    > > ListItem("--Select--","--Select--"));
    > >
    > > }
    > >
    > >
    > > private void BindSubSectionDropDownlist()
    > > {
    > > DataView dv = new DataView();
    > > dv = objSectionMaster.GetSubSectionRecReports();
    > > subSection_DropDownList.DataTextField="SectionDesc";
    > > subSection_DropDownList.DataValueField ="sectionId";
    > > subSection_DropDownList.DataSource=dv;
    > > subSection_DropDownList.DataBind();
    > > subSection_DropDownList.Items.Insert(0,new
    > > ListItem("--Select--","--Select--"));
    > >
    > > }
    > >
    > >
    > >
    > > private void BindSectionLineDropDownlist()
    > > {
    > >
    > > DataView dv = new DataView();
    > > dv = objSectionMaster.GetSectionLineRecReports();
    > > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > > sectionLine_DropDownList.DataValueField ="SectionLineId";
    > > sectionLine_DropDownList.DataSource= dv;
    > > sectionLine_DropDownList.DataBind();
    > >
    > > sectionLine_DropDownList.Items.Insert(0,new
    > > ListItem("--Select--","-1"));
    > >
    > >
    > > }
    > >
    > > private void section_DropDownList_SelectedIndexChanged(object sender,
    > > System.EventArgs e)
    > > {
    > > try
    > > {
    > > DataSet ds = new DataSet();
    > > ds =
    > > objSectionMaster.GetSubSectionRecForReports1(Convert.ToInt32(section_DropDownList.SelectedValue));
    > > subSection_DropDownList.DataTextField="SectionDesc";
    > > subSection_DropDownList.DataValueField ="SectionId";
    > > subSection_DropDownList.DataSource=ds;
    > > subSection_DropDownList.DataBind();
    > >
    > >
    > > }
    > > catch(Exception ex)
    > > {
    > > Response.Write("<script language=javascript> alert('"+
    > > ex.Message.ToString()+"');</script>");
    > > }
    > >
    > >
    > >
    > > private void subSection_DropDownList_SelectedIndexChanged(object
    > > sender, System.EventArgs e)
    > > {
    > > try
    > > {
    > > if(subSection_DropDownList.SelectedValue=="--Select--")
    > > {
    > > return;
    > > }
    > >
    > > DataView dv = new DataView();
    > > dv =
    > > objSectionMaster.GetSectionLinesRecForReports(Convert.ToInt32(subSection_DropDownList.SelectedValue));
    > > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > > sectionLine_DropDownList.DataValueField ="SectionId";
    > > sectionLine_DropDownList.DataSource=dv;
    > > sectionLine_DropDownList.DataBind();
    > >
    > > }
    > > catch(Exception ex)
    > > {
    > > Response.Write("<script language=javascript> alert('"+
    > > ex.Message.ToString()+"');</script>");
    > > }
    > > }
    > >
    > >
    > > private void search_Button_Click(object sender, System.EventArgs e)
    > > {
    > > SearchCondition();
    > > }
    > >
    > >
    > > Private void SearchCondition ();
    > > {
    > > Code for Searching according to the selection of third dropdown
    > > list.
    > > }
    > >
    > >
    > > Regards
    > >
    > > Shinde Santosh.
    > >
    > >
    > > Tim_Mac wrote:
    > >> typically this is done via AutoPostBack dropdownlists. it seems strange
    > >> that you bind all 3 lists on the first Page_Load, since you can't know
    > >> what
    > >> to populate lists 2 and 3 with until a selection has been made with list
    > >> 1.
    > >>
    > >> normally i would do something like this (pseudo-code):
    > >> First Page_Load (!PostBack) > Bind List 1 (lists 2 and 3 remain empty)
    > >> List1_SelectedIndex_Changed > Bind List 2
    > >> List2_SelectedIndex_Changed > Bind List 3
    > >> List3_SelectedIndex_Changed > Search whatever
    > >>
    > >> have you got AutoPostBack=true on all the lists? also, you haven't
    > >> posted
    > >> the SelectedIndexChanged events. it's very difficult to piece together
    > >> your
    > >> situation with only a part of the code. if you post all the relevant
    > >> code i
    > >> will be happy to take a look again.
    > >>
    > >> tim
    > >>
    > >>
    > >> "Santosh" <> wrote in message
    > >> news:...
    > >> > The description is ,
    > >> >
    > >> > i am having three dropdownlists when i am selected first item from list
    > >> > it will display all related items in the next drop down list when i am
    > >> > choose item from second drop down list in third all items filled
    > >> > related to second item selection. and in the selection of third
    > >> > dropdown list item text i will be display result.
    > >> >
    > >> > eg.i am having first dropdownlist it will contains all country list
    > >> > when i am choose one country it will display all states related to that
    > >> > country. if i am selected state from list it will display all districts
    > >> > related to the selected states. and on the selection of district i will
    > >> > be search another information.
    > >> >
    > >> > Tim_Mac wrote:
    > >> >> hi,
    > >> >> first it would be useful to describe what you are trying to do. code
    > >> >> is
    > >> >> helpful but it's no good unless you describe what you are trying to do
    > >> >> with
    > >> >> it!
    > >> >>
    > >> >> you say that the selected index of the first two dropdownlists are not
    > >> >> changed, are they supposed to change? in response to the user? or
    > >> >> your
    > >> >> code?
    > >> >> you have this line of code in each bind method:
    > >> >> //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> is it supposed to be uncommented?
    > >> >>
    > >> >> happy to help if you can provide more info
    > >> >> tim
    > >> >>
    > >> >>
    > >> >> "Santosh" <> wrote in message
    > >> >> news:...
    > >> >> > Dear all ,
    > >> >> >
    > >> >> > i am writting following code.
    > >> >> >
    > >> >> > if(Page.IsPostBack==false)
    > >> >> > {
    > >> >> > try
    > >> >> > {
    > >> >> >
    > >> >> > BindSectionDropDownlist();
    > >> >> > BindSubSectionDropDownlist();
    > >> >> > BindSectionLineDropDownlist();
    > >> >> > }
    > >> >> >
    > >> >> > catch(Exception ex)
    > >> >> > {
    > >> >> > Response.Write("<script language=Javascript>alert('"+
    > >> >> > ex.Message.ToString()+"');</script>");
    > >> >> > }
    > >> >> > }
    > >> >> > }
    > >> >> >
    > >> >> >
    > >> >> > // Defination of BindSectionDropDownList
    > >> >> >
    > >> >> >
    > >> >> > private void BindSectionDropDownlist()
    > >> >> > {
    > >> >> > DataView dv = new DataView();
    > >> >> > dv = objSectionMaster.GetSectionRecForReports();
    > >> >> > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    > >> >> > reportCategory_Dropdownlist.DataValueField ="sectionId";
    > >> >> > reportCategory_Dropdownlist.DataSource=dv;
    > >> >> > reportCategory_Dropdownlist.DataBind();
    > >> >> > reportCategory_Dropdownlist.Items.Insert(0,new
    > >> >> > ListItem("--Select--","--Select--"));
    > >> >> >
    > >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> > }
    > >> >> >
    > >> >> >
    > >> >> > private void BindSubSectionDropDownlist()
    > >> >> > {
    > >> >> > DataView dv = new DataView();
    > >> >> > dv = objSectionMaster.GetSubSectionRecReports();
    > >> >> > subSection_Dropdownlist.DataTextField="SectionDesc";
    > >> >> > subSection_Dropdownlist.DataValueField ="sectionId";
    > >> >> > subSection_Dropdownlist.DataSource=dv;
    > >> >> > subSection_Dropdownlist.DataBind();
    > >> >> > subSection_Dropdownlist.Items.Insert(0,new
    > >> >> > ListItem("--Select--","--Select--"));
    > >> >> >
    > >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> > }
    > >> >> >
    > >> >> >
    > >> >> > private void BindSectionLineDropDownlist()
    > >> >> > {
    > >> >> >
    > >> >> > DataView dv = new DataView();
    > >> >> > dv = objSectionMaster.GetSectionLineRecReports();
    > >> >> > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    > >> >> > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    > >> >> > sectionLineDesc_DropDownList.DataSource= dv;
    > >> >> > sectionLineDesc_DropDownList.DataBind();
    > >> >> >
    > >> >> > sectionLineDesc_DropDownList.Items.Insert(0,new
    > >> >> > ListItem("--Select--","-1"));
    > >> >> >
    > >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> > }
    > >> >> >
    > >> >> > private void search_Button_Click(object sender, System.EventArgs e)
    > >> >> > {
    > >> >> > selectQuery();
    > >> >> > }
    > >> >> >
    > >> >> > selectQuery();
    > >> >> > {
    > >> >> >
    > >> >> > //Code for further processing of on the basis of
    > >> >> > sectionLineDesc_DropDownList selection
    > >> >> >
    > >> >> >
    > >> >> > }
    > >> >> >
    > >> >> > selection index of first two dropdownlist is not changed but
    > >> >> > the third selected index of third dropdownlist is changed
    > >> >> > when i am click on search button.
    > >> >> >
    > >> >> >
    > >> >> > any help will be greatly appreciated.
    > >> >> >
    > >> >

    > >
    Santosh, Sep 11, 2006
    #7
  8. Santosh

    Tim_Mac Guest

    hi Santosh,
    when you say the index remains the same, do you mean when you change the
    index to the 5th item (for example) that it stays on the 5th item after the
    SelectedIndexChanged event? or that it stays on the first 'Select...' item
    after the event?

    tim


    "Santosh" <> wrote in message
    news:...
    > Dear Tim
    >
    > The selected index of first two lists remain same but only thirds are
    > change it change on
    > change List3 and and click search also.
    >
    > please help me. what exactely wrong happen.
    >
    >
    > regards
    > Santosh
    >
    >
    >
    > Tim_Mac wrote:
    >> hi Santosh,
    >> your code looks normal. in your original post, you say
    >>
    >> "selection index of first two dropdownlist is not changed but
    >> the third selected index of third dropdownlist is changed
    >> when i am click on search button."
    >>
    >> i am assuming that you have EnableViewStated = true and AutoPostBack=true
    >> set on all 3 drop down lists, and that the SelectedIndexChanged events
    >> are
    >> correctly registered for all 3 menus, and that these events are firing
    >> correctly.
    >> if this is the case then when you change List1, it will postback and the
    >> selectedIndex of List1 should stay on what you selected. It should also
    >> stay for all future postbacks unless you re-bind the list. Does this
    >> happen?
    >>
    >> when you click on the search button, the SelectedIndex of all 3 lists
    >> should
    >> be the same as you left it. from the description of your steps below,
    >> can
    >> you say exactly where your code behaves unexpectedly:
    >>
    >> Step 1: change List1
    >> Step 2: change List2
    >> Step 3: change List3
    >> Step 4: click search.
    >>
    >> tim
    >>
    >>
    >>
    >> "Santosh" <> wrote in message
    >> news:...
    >> > Here is code ..
    >> >
    >> >
    >> > private void Page_Load(object sender, System.EventArgs e)
    >> > {
    >> > // Put user code to initialize the page here
    >> > if(!Page.IsPostBack)
    >> > {
    >> > try
    >> > {
    >> > BindSectionDropDownlist();
    >> > BindSubSectionDropDownlist();
    >> > BindSectionLineDropDownlist();
    >> > }
    >> >
    >> > catch(Exception ex)
    >> > {
    >> > Response.Write("<script language=Javascript>alert('"+
    >> > ex.Message.ToString()+"');</script>");
    >> > }
    >> > }
    >> > }
    >> >
    >> >
    >> > private void BindSectionDropDownlist()
    >> > {
    >> > DataView dv = new DataView();
    >> > dv = objSectionMaster.GetSectionRecForReports();
    >> >
    >> > section_DropDownList.DataTextField="SectionDesc";
    >> > section_DropDownList.DataValueField ="sectionId";
    >> > section_DropDownList.DataSource=dv;
    >> > section_DropDownList.DataBind();
    >> > section_DropDownList.Items.Insert(0,new
    >> > ListItem("--Select--","--Select--"));
    >> >
    >> > }
    >> >
    >> >
    >> > private void BindSubSectionDropDownlist()
    >> > {
    >> > DataView dv = new DataView();
    >> > dv = objSectionMaster.GetSubSectionRecReports();
    >> > subSection_DropDownList.DataTextField="SectionDesc";
    >> > subSection_DropDownList.DataValueField ="sectionId";
    >> > subSection_DropDownList.DataSource=dv;
    >> > subSection_DropDownList.DataBind();
    >> > subSection_DropDownList.Items.Insert(0,new
    >> > ListItem("--Select--","--Select--"));
    >> >
    >> > }
    >> >
    >> >
    >> >
    >> > private void BindSectionLineDropDownlist()
    >> > {
    >> >
    >> > DataView dv = new DataView();
    >> > dv = objSectionMaster.GetSectionLineRecReports();
    >> > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    >> > sectionLine_DropDownList.DataValueField ="SectionLineId";
    >> > sectionLine_DropDownList.DataSource= dv;
    >> > sectionLine_DropDownList.DataBind();
    >> >
    >> > sectionLine_DropDownList.Items.Insert(0,new
    >> > ListItem("--Select--","-1"));
    >> >
    >> >
    >> > }
    >> >
    >> > private void section_DropDownList_SelectedIndexChanged(object sender,
    >> > System.EventArgs e)
    >> > {
    >> > try
    >> > {
    >> > DataSet ds = new DataSet();
    >> > ds =
    >> > objSectionMaster.GetSubSectionRecForReports1(Convert.ToInt32(section_DropDownList.SelectedValue));
    >> > subSection_DropDownList.DataTextField="SectionDesc";
    >> > subSection_DropDownList.DataValueField ="SectionId";
    >> > subSection_DropDownList.DataSource=ds;
    >> > subSection_DropDownList.DataBind();
    >> >
    >> >
    >> > }
    >> > catch(Exception ex)
    >> > {
    >> > Response.Write("<script language=javascript> alert('"+
    >> > ex.Message.ToString()+"');</script>");
    >> > }
    >> >
    >> >
    >> >
    >> > private void subSection_DropDownList_SelectedIndexChanged(object
    >> > sender, System.EventArgs e)
    >> > {
    >> > try
    >> > {
    >> > if(subSection_DropDownList.SelectedValue=="--Select--")
    >> > {
    >> > return;
    >> > }
    >> >
    >> > DataView dv = new DataView();
    >> > dv =
    >> > objSectionMaster.GetSectionLinesRecForReports(Convert.ToInt32(subSection_DropDownList.SelectedValue));
    >> > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    >> > sectionLine_DropDownList.DataValueField ="SectionId";
    >> > sectionLine_DropDownList.DataSource=dv;
    >> > sectionLine_DropDownList.DataBind();
    >> >
    >> > }
    >> > catch(Exception ex)
    >> > {
    >> > Response.Write("<script language=javascript> alert('"+
    >> > ex.Message.ToString()+"');</script>");
    >> > }
    >> > }
    >> >
    >> >
    >> > private void search_Button_Click(object sender, System.EventArgs e)
    >> > {
    >> > SearchCondition();
    >> > }
    >> >
    >> >
    >> > Private void SearchCondition ();
    >> > {
    >> > Code for Searching according to the selection of third dropdown
    >> > list.
    >> > }
    >> >
    >> >
    >> > Regards
    >> >
    >> > Shinde Santosh.
    >> >
    >> >
    >> > Tim_Mac wrote:
    >> >> typically this is done via AutoPostBack dropdownlists. it seems
    >> >> strange
    >> >> that you bind all 3 lists on the first Page_Load, since you can't know
    >> >> what
    >> >> to populate lists 2 and 3 with until a selection has been made with
    >> >> list
    >> >> 1.
    >> >>
    >> >> normally i would do something like this (pseudo-code):
    >> >> First Page_Load (!PostBack) > Bind List 1 (lists 2 and 3 remain
    >> >> empty)
    >> >> List1_SelectedIndex_Changed > Bind List 2
    >> >> List2_SelectedIndex_Changed > Bind List 3
    >> >> List3_SelectedIndex_Changed > Search whatever
    >> >>
    >> >> have you got AutoPostBack=true on all the lists? also, you haven't
    >> >> posted
    >> >> the SelectedIndexChanged events. it's very difficult to piece
    >> >> together
    >> >> your
    >> >> situation with only a part of the code. if you post all the relevant
    >> >> code i
    >> >> will be happy to take a look again.
    >> >>
    >> >> tim
    >> >>
    >> >>
    >> >> "Santosh" <> wrote in message
    >> >> news:...
    >> >> > The description is ,
    >> >> >
    >> >> > i am having three dropdownlists when i am selected first item from
    >> >> > list
    >> >> > it will display all related items in the next drop down list when i
    >> >> > am
    >> >> > choose item from second drop down list in third all items filled
    >> >> > related to second item selection. and in the selection of third
    >> >> > dropdown list item text i will be display result.
    >> >> >
    >> >> > eg.i am having first dropdownlist it will contains all country list
    >> >> > when i am choose one country it will display all states related to
    >> >> > that
    >> >> > country. if i am selected state from list it will display all
    >> >> > districts
    >> >> > related to the selected states. and on the selection of district i
    >> >> > will
    >> >> > be search another information.
    >> >> >
    >> >> > Tim_Mac wrote:
    >> >> >> hi,
    >> >> >> first it would be useful to describe what you are trying to do.
    >> >> >> code
    >> >> >> is
    >> >> >> helpful but it's no good unless you describe what you are trying to
    >> >> >> do
    >> >> >> with
    >> >> >> it!
    >> >> >>
    >> >> >> you say that the selected index of the first two dropdownlists are
    >> >> >> not
    >> >> >> changed, are they supposed to change? in response to the user? or
    >> >> >> your
    >> >> >> code?
    >> >> >> you have this line of code in each bind method:
    >> >> >> //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> >> is it supposed to be uncommented?
    >> >> >>
    >> >> >> happy to help if you can provide more info
    >> >> >> tim
    >> >> >>
    >> >> >>
    >> >> >> "Santosh" <> wrote in message
    >> >> >> news:...
    >> >> >> > Dear all ,
    >> >> >> >
    >> >> >> > i am writting following code.
    >> >> >> >
    >> >> >> > if(Page.IsPostBack==false)
    >> >> >> > {
    >> >> >> > try
    >> >> >> > {
    >> >> >> >
    >> >> >> > BindSectionDropDownlist();
    >> >> >> > BindSubSectionDropDownlist();
    >> >> >> > BindSectionLineDropDownlist();
    >> >> >> > }
    >> >> >> >
    >> >> >> > catch(Exception ex)
    >> >> >> > {
    >> >> >> > Response.Write("<script language=Javascript>alert('"+
    >> >> >> > ex.Message.ToString()+"');</script>");
    >> >> >> > }
    >> >> >> > }
    >> >> >> > }
    >> >> >> >
    >> >> >> >
    >> >> >> > // Defination of BindSectionDropDownList
    >> >> >> >
    >> >> >> >
    >> >> >> > private void BindSectionDropDownlist()
    >> >> >> > {
    >> >> >> > DataView dv = new DataView();
    >> >> >> > dv = objSectionMaster.GetSectionRecForReports();
    >> >> >> > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    >> >> >> > reportCategory_Dropdownlist.DataValueField ="sectionId";
    >> >> >> > reportCategory_Dropdownlist.DataSource=dv;
    >> >> >> > reportCategory_Dropdownlist.DataBind();
    >> >> >> > reportCategory_Dropdownlist.Items.Insert(0,new
    >> >> >> > ListItem("--Select--","--Select--"));
    >> >> >> >
    >> >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> >> > }
    >> >> >> >
    >> >> >> >
    >> >> >> > private void BindSubSectionDropDownlist()
    >> >> >> > {
    >> >> >> > DataView dv = new DataView();
    >> >> >> > dv = objSectionMaster.GetSubSectionRecReports();
    >> >> >> > subSection_Dropdownlist.DataTextField="SectionDesc";
    >> >> >> > subSection_Dropdownlist.DataValueField ="sectionId";
    >> >> >> > subSection_Dropdownlist.DataSource=dv;
    >> >> >> > subSection_Dropdownlist.DataBind();
    >> >> >> > subSection_Dropdownlist.Items.Insert(0,new
    >> >> >> > ListItem("--Select--","--Select--"));
    >> >> >> >
    >> >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> >> > }
    >> >> >> >
    >> >> >> >
    >> >> >> > private void BindSectionLineDropDownlist()
    >> >> >> > {
    >> >> >> >
    >> >> >> > DataView dv = new DataView();
    >> >> >> > dv = objSectionMaster.GetSectionLineRecReports();
    >> >> >> > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    >> >> >> > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    >> >> >> > sectionLineDesc_DropDownList.DataSource= dv;
    >> >> >> > sectionLineDesc_DropDownList.DataBind();
    >> >> >> >
    >> >> >> > sectionLineDesc_DropDownList.Items.Insert(0,new
    >> >> >> > ListItem("--Select--","-1"));
    >> >> >> >
    >> >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    >> >> >> > }
    >> >> >> >
    >> >> >> > private void search_Button_Click(object sender, System.EventArgs
    >> >> >> > e)
    >> >> >> > {
    >> >> >> > selectQuery();
    >> >> >> > }
    >> >> >> >
    >> >> >> > selectQuery();
    >> >> >> > {
    >> >> >> >
    >> >> >> > //Code for further processing of on the basis of
    >> >> >> > sectionLineDesc_DropDownList selection
    >> >> >> >
    >> >> >> >
    >> >> >> > }
    >> >> >> >
    >> >> >> > selection index of first two dropdownlist is not changed but
    >> >> >> > the third selected index of third dropdownlist is changed
    >> >> >> > when i am click on search button.
    >> >> >> >
    >> >> >> >
    >> >> >> > any help will be greatly appreciated.
    >> >> >> >
    >> >> >
    >> >

    >
    Tim_Mac, Sep 11, 2006
    #8
  9. Santosh

    Santosh Guest

    hi Tim_Mac

    it is not like that say
    if i select fifth item from the third list then after page is post
    back it will lose selection from fifth to first item in the list.

    Tim_Mac wrote:
    > hi Santosh,
    > when you say the index remains the same, do you mean when you change the
    > index to the 5th item (for example) that it stays on the 5th item after the
    > SelectedIndexChanged event? or that it stays on the first 'Select...' item
    > after the event?
    >
    > tim
    >
    >
    > "Santosh" <> wrote in message
    > news:...
    > > Dear Tim
    > >
    > > The selected index of first two lists remain same but only thirds are
    > > change it change on
    > > change List3 and and click search also.
    > >
    > > please help me. what exactely wrong happen.
    > >
    > >
    > > regards
    > > Santosh
    > >
    > >
    > >
    > > Tim_Mac wrote:
    > >> hi Santosh,
    > >> your code looks normal. in your original post, you say
    > >>
    > >> "selection index of first two dropdownlist is not changed but
    > >> the third selected index of third dropdownlist is changed
    > >> when i am click on search button."
    > >>
    > >> i am assuming that you have EnableViewStated = true and AutoPostBack=true
    > >> set on all 3 drop down lists, and that the SelectedIndexChanged events
    > >> are
    > >> correctly registered for all 3 menus, and that these events are firing
    > >> correctly.
    > >> if this is the case then when you change List1, it will postback and the
    > >> selectedIndex of List1 should stay on what you selected. It should also
    > >> stay for all future postbacks unless you re-bind the list. Does this
    > >> happen?
    > >>
    > >> when you click on the search button, the SelectedIndex of all 3 lists
    > >> should
    > >> be the same as you left it. from the description of your steps below,
    > >> can
    > >> you say exactly where your code behaves unexpectedly:
    > >>
    > >> Step 1: change List1
    > >> Step 2: change List2
    > >> Step 3: change List3
    > >> Step 4: click search.
    > >>
    > >> tim
    > >>
    > >>
    > >>
    > >> "Santosh" <> wrote in message
    > >> news:...
    > >> > Here is code ..
    > >> >
    > >> >
    > >> > private void Page_Load(object sender, System.EventArgs e)
    > >> > {
    > >> > // Put user code to initialize the page here
    > >> > if(!Page.IsPostBack)
    > >> > {
    > >> > try
    > >> > {
    > >> > BindSectionDropDownlist();
    > >> > BindSubSectionDropDownlist();
    > >> > BindSectionLineDropDownlist();
    > >> > }
    > >> >
    > >> > catch(Exception ex)
    > >> > {
    > >> > Response.Write("<script language=Javascript>alert('"+
    > >> > ex.Message.ToString()+"');</script>");
    > >> > }
    > >> > }
    > >> > }
    > >> >
    > >> >
    > >> > private void BindSectionDropDownlist()
    > >> > {
    > >> > DataView dv = new DataView();
    > >> > dv = objSectionMaster.GetSectionRecForReports();
    > >> >
    > >> > section_DropDownList.DataTextField="SectionDesc";
    > >> > section_DropDownList.DataValueField ="sectionId";
    > >> > section_DropDownList.DataSource=dv;
    > >> > section_DropDownList.DataBind();
    > >> > section_DropDownList.Items.Insert(0,new
    > >> > ListItem("--Select--","--Select--"));
    > >> >
    > >> > }
    > >> >
    > >> >
    > >> > private void BindSubSectionDropDownlist()
    > >> > {
    > >> > DataView dv = new DataView();
    > >> > dv = objSectionMaster.GetSubSectionRecReports();
    > >> > subSection_DropDownList.DataTextField="SectionDesc";
    > >> > subSection_DropDownList.DataValueField ="sectionId";
    > >> > subSection_DropDownList.DataSource=dv;
    > >> > subSection_DropDownList.DataBind();
    > >> > subSection_DropDownList.Items.Insert(0,new
    > >> > ListItem("--Select--","--Select--"));
    > >> >
    > >> > }
    > >> >
    > >> >
    > >> >
    > >> > private void BindSectionLineDropDownlist()
    > >> > {
    > >> >
    > >> > DataView dv = new DataView();
    > >> > dv = objSectionMaster.GetSectionLineRecReports();
    > >> > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > >> > sectionLine_DropDownList.DataValueField ="SectionLineId";
    > >> > sectionLine_DropDownList.DataSource= dv;
    > >> > sectionLine_DropDownList.DataBind();
    > >> >
    > >> > sectionLine_DropDownList.Items.Insert(0,new
    > >> > ListItem("--Select--","-1"));
    > >> >
    > >> >
    > >> > }
    > >> >
    > >> > private void section_DropDownList_SelectedIndexChanged(object sender,
    > >> > System.EventArgs e)
    > >> > {
    > >> > try
    > >> > {
    > >> > DataSet ds = new DataSet();
    > >> > ds =
    > >> > objSectionMaster.GetSubSectionRecForReports1(Convert.ToInt32(section_DropDownList.SelectedValue));
    > >> > subSection_DropDownList.DataTextField="SectionDesc";
    > >> > subSection_DropDownList.DataValueField ="SectionId";
    > >> > subSection_DropDownList.DataSource=ds;
    > >> > subSection_DropDownList.DataBind();
    > >> >
    > >> >
    > >> > }
    > >> > catch(Exception ex)
    > >> > {
    > >> > Response.Write("<script language=javascript> alert('"+
    > >> > ex.Message.ToString()+"');</script>");
    > >> > }
    > >> >
    > >> >
    > >> >
    > >> > private void subSection_DropDownList_SelectedIndexChanged(object
    > >> > sender, System.EventArgs e)
    > >> > {
    > >> > try
    > >> > {
    > >> > if(subSection_DropDownList.SelectedValue=="--Select--")
    > >> > {
    > >> > return;
    > >> > }
    > >> >
    > >> > DataView dv = new DataView();
    > >> > dv =
    > >> > objSectionMaster.GetSectionLinesRecForReports(Convert.ToInt32(subSection_DropDownList.SelectedValue));
    > >> > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > >> > sectionLine_DropDownList.DataValueField ="SectionId";
    > >> > sectionLine_DropDownList.DataSource=dv;
    > >> > sectionLine_DropDownList.DataBind();
    > >> >
    > >> > }
    > >> > catch(Exception ex)
    > >> > {
    > >> > Response.Write("<script language=javascript> alert('"+
    > >> > ex.Message.ToString()+"');</script>");
    > >> > }
    > >> > }
    > >> >
    > >> >
    > >> > private void search_Button_Click(object sender, System.EventArgs e)
    > >> > {
    > >> > SearchCondition();
    > >> > }
    > >> >
    > >> >
    > >> > Private void SearchCondition ();
    > >> > {
    > >> > Code for Searching according to the selection of third dropdown
    > >> > list.
    > >> > }
    > >> >
    > >> >
    > >> > Regards
    > >> >
    > >> > Shinde Santosh.
    > >> >
    > >> >
    > >> > Tim_Mac wrote:
    > >> >> typically this is done via AutoPostBack dropdownlists. it seems
    > >> >> strange
    > >> >> that you bind all 3 lists on the first Page_Load, since you can't know
    > >> >> what
    > >> >> to populate lists 2 and 3 with until a selection has been made with
    > >> >> list
    > >> >> 1.
    > >> >>
    > >> >> normally i would do something like this (pseudo-code):
    > >> >> First Page_Load (!PostBack) > Bind List 1 (lists 2 and 3 remain
    > >> >> empty)
    > >> >> List1_SelectedIndex_Changed > Bind List 2
    > >> >> List2_SelectedIndex_Changed > Bind List 3
    > >> >> List3_SelectedIndex_Changed > Search whatever
    > >> >>
    > >> >> have you got AutoPostBack=true on all the lists? also, you haven't
    > >> >> posted
    > >> >> the SelectedIndexChanged events. it's very difficult to piece
    > >> >> together
    > >> >> your
    > >> >> situation with only a part of the code. if you post all the relevant
    > >> >> code i
    > >> >> will be happy to take a look again.
    > >> >>
    > >> >> tim
    > >> >>
    > >> >>
    > >> >> "Santosh" <> wrote in message
    > >> >> news:...
    > >> >> > The description is ,
    > >> >> >
    > >> >> > i am having three dropdownlists when i am selected first item from
    > >> >> > list
    > >> >> > it will display all related items in the next drop down list when i
    > >> >> > am
    > >> >> > choose item from second drop down list in third all items filled
    > >> >> > related to second item selection. and in the selection of third
    > >> >> > dropdown list item text i will be display result.
    > >> >> >
    > >> >> > eg.i am having first dropdownlist it will contains all country list
    > >> >> > when i am choose one country it will display all states related to
    > >> >> > that
    > >> >> > country. if i am selected state from list it will display all
    > >> >> > districts
    > >> >> > related to the selected states. and on the selection of district i
    > >> >> > will
    > >> >> > be search another information.
    > >> >> >
    > >> >> > Tim_Mac wrote:
    > >> >> >> hi,
    > >> >> >> first it would be useful to describe what you are trying to do.
    > >> >> >> code
    > >> >> >> is
    > >> >> >> helpful but it's no good unless you describe what you are trying to
    > >> >> >> do
    > >> >> >> with
    > >> >> >> it!
    > >> >> >>
    > >> >> >> you say that the selected index of the first two dropdownlists are
    > >> >> >> not
    > >> >> >> changed, are they supposed to change? in response to the user? or
    > >> >> >> your
    > >> >> >> code?
    > >> >> >> you have this line of code in each bind method:
    > >> >> >> //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> >> is it supposed to be uncommented?
    > >> >> >>
    > >> >> >> happy to help if you can provide more info
    > >> >> >> tim
    > >> >> >>
    > >> >> >>
    > >> >> >> "Santosh" <> wrote in message
    > >> >> >> news:...
    > >> >> >> > Dear all ,
    > >> >> >> >
    > >> >> >> > i am writting following code.
    > >> >> >> >
    > >> >> >> > if(Page.IsPostBack==false)
    > >> >> >> > {
    > >> >> >> > try
    > >> >> >> > {
    > >> >> >> >
    > >> >> >> > BindSectionDropDownlist();
    > >> >> >> > BindSubSectionDropDownlist();
    > >> >> >> > BindSectionLineDropDownlist();
    > >> >> >> > }
    > >> >> >> >
    > >> >> >> > catch(Exception ex)
    > >> >> >> > {
    > >> >> >> > Response.Write("<script language=Javascript>alert('"+
    > >> >> >> > ex.Message.ToString()+"');</script>");
    > >> >> >> > }
    > >> >> >> > }
    > >> >> >> > }
    > >> >> >> >
    > >> >> >> >
    > >> >> >> > // Defination of BindSectionDropDownList
    > >> >> >> >
    > >> >> >> >
    > >> >> >> > private void BindSectionDropDownlist()
    > >> >> >> > {
    > >> >> >> > DataView dv = new DataView();
    > >> >> >> > dv = objSectionMaster.GetSectionRecForReports();
    > >> >> >> > reportCategory_Dropdownlist.DataTextField="SectionDesc";
    > >> >> >> > reportCategory_Dropdownlist.DataValueField ="sectionId";
    > >> >> >> > reportCategory_Dropdownlist.DataSource=dv;
    > >> >> >> > reportCategory_Dropdownlist.DataBind();
    > >> >> >> > reportCategory_Dropdownlist.Items.Insert(0,new
    > >> >> >> > ListItem("--Select--","--Select--"));
    > >> >> >> >
    > >> >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> >> > }
    > >> >> >> >
    > >> >> >> >
    > >> >> >> > private void BindSubSectionDropDownlist()
    > >> >> >> > {
    > >> >> >> > DataView dv = new DataView();
    > >> >> >> > dv = objSectionMaster.GetSubSectionRecReports();
    > >> >> >> > subSection_Dropdownlist.DataTextField="SectionDesc";
    > >> >> >> > subSection_Dropdownlist.DataValueField ="sectionId";
    > >> >> >> > subSection_Dropdownlist.DataSource=dv;
    > >> >> >> > subSection_Dropdownlist.DataBind();
    > >> >> >> > subSection_Dropdownlist.Items.Insert(0,new
    > >> >> >> > ListItem("--Select--","--Select--"));
    > >> >> >> >
    > >> >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> >> > }
    > >> >> >> >
    > >> >> >> >
    > >> >> >> > private void BindSectionLineDropDownlist()
    > >> >> >> > {
    > >> >> >> >
    > >> >> >> > DataView dv = new DataView();
    > >> >> >> > dv = objSectionMaster.GetSectionLineRecReports();
    > >> >> >> > sectionLineDesc_DropDownList.DataTextField="SectionLineDescription";
    > >> >> >> > sectionLineDesc_DropDownList.DataValueField ="SectionLineId";
    > >> >> >> > sectionLineDesc_DropDownList.DataSource= dv;
    > >> >> >> > sectionLineDesc_DropDownList.DataBind();
    > >> >> >> >
    > >> >> >> > sectionLineDesc_DropDownList.Items.Insert(0,new
    > >> >> >> > ListItem("--Select--","-1"));
    > >> >> >> >
    > >> >> >> > //reportCategoty_DropDownList.SelectedIndex=-1;
    > >> >> >> > }
    > >> >> >> >
    > >> >> >> > private void search_Button_Click(object sender, System.EventArgs
    > >> >> >> > e)
    > >> >> >> > {
    > >> >> >> > selectQuery();
    > >> >> >> > }
    > >> >> >> >
    > >> >> >> > selectQuery();
    > >> >> >> > {
    > >> >> >> >
    > >> >> >> > //Code for further processing of on the basis of
    > >> >> >> > sectionLineDesc_DropDownList selection
    > >> >> >> >
    > >> >> >> >
    > >> >> >> > }
    > >> >> >> >
    > >> >> >> > selection index of first two dropdownlist is not changed but
    > >> >> >> > the third selected index of third dropdownlist is changed
    > >> >> >> > when i am click on search button.
    > >> >> >> >
    > >> >> >> >
    > >> >> >> > any help will be greatly appreciated.
    > >> >> >> >
    > >> >> >
    > >> >

    > >
    Santosh, Sep 12, 2006
    #9
  10. Santosh

    Tim_Mac Guest

    hi Santosh,
    it is difficult to follow your situation. you say that after you change
    List3 that it resets the index back to 0 when the page posts back. am i
    right in saying that the postback is because List3 has AutoPostBack=true?
    the reason i ask is because you don't appear to have a SelectedIndexChanged
    event for List3. so i'm not sure why you would want List3 to post back
    itself.

    i hope you can clarify the above question. also, please post your aspx code
    with the 3 lists, and your InitialiseComponent code to make sure you have
    wired the events correctly with the menus.

    tim
    Tim_Mac, Sep 12, 2006
    #10
  11. Santosh

    Santosh Guest

    Hii Tim_Mac
    I am trying both options if i am set autopostback=false to third list
    then also the selection is changed. when page is get postback. and when
    i am set autopostback=true and writting code to selectionchanged for
    capturing selected value so third list in this case also value is get
    changed.

    again i am giving total code to you.



    private void Page_Load(object sender, System.EventArgs e)
    {
    // Put user code to initialize the page here

    if(!Page.IsPostBack)
    {
    try
    {
    BindDistrictList();
    BindSDOList();
    BindTalukaList();
    BindCircleList();
    BindVillageList();
    BindSectionDropDownlist();
    BindSubSectionDropDownlist();
    BindSectionLineDropDownlist();

    }

    catch(Exception ex)
    {
    Response.Write("<script language=Javascript>alert('"+
    ex.Message.ToString()+"');</script>");
    }
    }
    }

    #region Web Form Designer generated code
    override protected void OnInit(EventArgs e)
    {
    //
    // CODEGEN: This call is required by the ASP.NET Web Form Designer.
    //
    InitializeComponent();
    base.OnInit(e);
    }

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
    this.village_Res_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.village_Res_DropDownList_SelectedIndexChanged);
    this.go_Button.Click += new
    System.EventHandler(this.go_Button_Click);
    this.section_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.section_DropDownList_SelectedIndexChanged);
    this.subSection_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.subSection_DropDownList_SelectedIndexChanged);
    this.sectionLine_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.sectionLine_DropDownList_SelectedIndexChanged);
    this.district_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.district_DropDownList_SelectedIndexChanged);
    this.SDO_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.SDO_DropDownList_SelectedIndexChanged);
    this.circle_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.circle_DropDownList_SelectedIndexChanged);
    this.village_DropDownList.SelectedIndexChanged += new
    System.EventHandler(this.village_DropDownList_SelectedIndexChanged);
    this.search_Button.Click += new
    System.EventHandler(this.search_Button_Click);
    this.Load += new System.EventHandler(this.Page_Load);

    }
    #endregion

    private void BindSectionDropDownlist()
    {
    DataView dv = new DataView();
    dv = objSectionMaster.GetSectionRecForReports();

    section_DropDownList.DataTextField="SectionDesc";
    section_DropDownList.DataValueField ="sectionId";
    section_DropDownList.DataSource=dv;
    section_DropDownList.DataBind();
    section_DropDownList.Items.Insert(0,new
    ListItem("--Select--","--Select--"));


    }


    private void BindSubSectionDropDownlist()
    {
    DataView dv = new DataView();
    dv = objSectionMaster.GetSubSectionRecReports();
    subSection_DropDownList.DataTextField="SectionDesc";
    subSection_DropDownList.DataValueField ="sectionId";
    subSection_DropDownList.DataSource=dv;
    subSection_DropDownList.DataBind();
    subSection_DropDownList.Items.Insert(0,new
    ListItem("--Select--","--Select--"));


    }



    private void BindSectionLineDropDownlist()
    {

    DataView dv = new DataView();
    dv = objSectionMaster.GetSectionLineRecReports();
    sectionLine_DropDownList.DataTextField="SectionLineDescription";
    sectionLine_DropDownList.DataValueField ="SectionLineId";
    sectionLine_DropDownList.DataSource= dv;
    sectionLine_DropDownList.DataBind();

    sectionLine_DropDownList.Items.Insert(0,new
    ListItem("--Select--","-1"));


    }





    private void section_DropDownList_SelectedIndexChanged(object sender,
    System.EventArgs e)
    {
    try
    {

    DataSet ds = new DataSet();
    ds =
    objSectionMaster.GetSubSectionRecForReports1(Convert.ToInt32(section_DropDownList.SelectedValue));

    subSection_DropDownList.DataTextField="SectionDesc";
    subSection_DropDownList.DataValueField ="SectionId";
    subSection_DropDownList.DataSource=ds;
    subSection_DropDownList.DataBind();

    }
    catch(Exception ex)
    {
    Response.Write("<script language=javascript> alert('"+
    ex.Message.ToString()+"');</script>");
    }


    }


    private void subSection_DropDownList_SelectedIndexChanged(object
    sender, System.EventArgs e)
    {
    try
    {
    if(subSection_DropDownList.SelectedValue=="--Select--")
    {
    return;
    }

    DataView dv = new DataView();
    dv =
    objSectionMaster.GetSectionLinesRecForReports(Convert.ToInt32(subSection_DropDownList.SelectedValue));
    sectionLine_DropDownList.DataTextField="SectionLineDescription";
    sectionLine_DropDownList.DataValueField ="SectionId";
    sectionLine_DropDownList.DataSource=dv;
    sectionLine_DropDownList.DataBind();
    //resource_Label.Text = sectionLine_DropDownList.SelectedItem.Text;
    //sectionLine_DropDownList.Items.Insert(0,new
    ListItem("--Select--","--Select--"));
    }
    catch(Exception ex)
    {
    Response.Write("<script language=javascript> alert('"+
    ex.Message.ToString()+"');</script>");
    }
    }





    Tim_Mac wrote:
    > hi Santosh,
    > it is difficult to follow your situation. you say that after you change
    > List3 that it resets the index back to 0 when the page posts back. am i
    > right in saying that the postback is because List3 has AutoPostBack=true?
    > the reason i ask is because you don't appear to have a SelectedIndexChanged
    > event for List3. so i'm not sure why you would want List3 to post back
    > itself.
    >
    > i hope you can clarify the above question. also, please post your aspx code
    > with the 3 lists, and your InitialiseComponent code to make sure you have
    > wired the events correctly with the menus.
    >
    > tim
    Santosh, Sep 12, 2006
    #11
  12. Santosh

    Tim_Mac Guest

    hi Santosh,
    what i was interested in was the aspx which i don't think you sent yet, but
    no matter, i have written a simple reproduction of your scenario which works
    correctly. i will leave it up to you to compare what is different in your
    own situation.

    aspx:
    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs"
    Inherits="TestDdl" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <HTML>
    <HEAD id="Head1">
    <title>Untitled Page</title>
    </HEAD>
    <body>
    <form id="form1" runat="server">
    <div>
    <asp:DropDownList ID="ddl1" runat="server" AutoPostBack="True"
    OnSelectedIndexChanged="ddl1_SelectedIndexChanged"></asp:DropDownList>
    <asp:DropDownList ID="ddl2" runat="server" AutoPostBack="True"
    OnSelectedIndexChanged="ddl2_SelectedIndexChanged"></asp:DropDownList>
    <asp:DropDownList ID="ddl3" runat="server" AutoPostBack="True"
    OnSelectedIndexChanged="ddl3_SelectedIndexChanged"></asp:DropDownList>&nbsp;
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    <asp:Button ID="Button1" runat="server" OnClick="Button1_Click"
    Text="Search" />
    <br>
    <br>
    <asp:Label ID="Label1" runat="server"></asp:Label></div>
    </form>
    </body>
    </HTML>



    code behind:

    using System;
    using System.Data;
    using System.Collections;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.HtmlControls;

    public class TestDdl : System.Web.UI.Page
    {
    protected System.Web.UI.WebControls.DropDownList ddl1;
    protected System.Web.UI.WebControls.DropDownList ddl2;
    protected System.Web.UI.WebControls.DropDownList ddl3;
    protected System.Web.UI.WebControls.TextBox TextBox1;
    protected System.Web.UI.WebControls.Button Button1;
    protected System.Web.UI.WebControls.Label Label1;

    protected void Page_Load(object sender, EventArgs e)
    {
    if(!IsPostBack)
    {
    // bind list 1
    this.ddl1.DataSource = GetRandomDataSource();
    this.ddl1.DataBind();
    this.ddl1.Items.Insert(0, new ListItem("Select...", ""));

    // disable the textbox and button until all menus have been selected
    this.TextBox1.Enabled = false;
    this.Button1.Enabled = false;
    }
    }
    protected void ddl1_SelectedIndexChanged(object sender, EventArgs e)
    {
    // bind list 2
    this.ddl2.DataSource = GetRandomDataSource();
    this.ddl2.DataBind();
    this.ddl2.Items.Insert(0, new ListItem("Select...", ""));
    }
    protected void ddl2_SelectedIndexChanged(object sender, EventArgs e)
    {
    // bind list 3
    this.ddl3.DataSource = GetRandomDataSource();
    this.ddl3.DataBind();
    this.ddl3.Items.Insert(0, new ListItem("Select...", ""));
    }
    protected void ddl3_SelectedIndexChanged(object sender, EventArgs e)
    {
    // enable textbox + search button
    this.TextBox1.Enabled = true;
    this.Button1.Enabled = true;
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
    this.Label1.Text = String.Format("You searched for '{0}' with {1} in list
    1, {2} in list 2, and {3} in list 3", this.TextBox1.Text,
    this.ddl1.SelectedValue, this.ddl2.SelectedValue, this.ddl3.SelectedValue);
    }

    #region Web Form Designer generated code
    override protected void OnInit(EventArgs e)
    {
    //
    // CODEGEN: This call is required by the ASP.NET Web Form Designer.
    //
    InitializeComponent();
    base.OnInit(e);
    }

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
    this.Load += new System.EventHandler(this.Page_Load);
    }
    #endregion

    private ArrayList GetRandomDataSource()
    {
    ArrayList arr = new ArrayList();
    Random r = new Random();
    for(int i = 0; i < 10; i++)
    arr.Add(r.Next(9999));
    return arr;
    }
    }


    the most likely explanation is that you have EnableViewState=False on one of
    your lists, this is why i wanted to see the aspx.

    good luck, and i hope this helps.
    tim


    "Santosh" <> wrote in message
    news:...
    > Hii Tim_Mac
    > I am trying both options if i am set autopostback=false to third list
    > then also the selection is changed. when page is get postback. and when
    > i am set autopostback=true and writting code to selectionchanged for
    > capturing selected value so third list in this case also value is get
    > changed.
    >
    > again i am giving total code to you.
    >
    >
    >
    > private void Page_Load(object sender, System.EventArgs e)
    > {
    > // Put user code to initialize the page here
    >
    > if(!Page.IsPostBack)
    > {
    > try
    > {
    > BindDistrictList();
    > BindSDOList();
    > BindTalukaList();
    > BindCircleList();
    > BindVillageList();
    > BindSectionDropDownlist();
    > BindSubSectionDropDownlist();
    > BindSectionLineDropDownlist();
    >
    > }
    >
    > catch(Exception ex)
    > {
    > Response.Write("<script language=Javascript>alert('"+
    > ex.Message.ToString()+"');</script>");
    > }
    > }
    > }
    >
    > #region Web Form Designer generated code
    > override protected void OnInit(EventArgs e)
    > {
    > //
    > // CODEGEN: This call is required by the ASP.NET Web Form Designer.
    > //
    > InitializeComponent();
    > base.OnInit(e);
    > }
    >
    > /// <summary>
    > /// Required method for Designer support - do not modify
    > /// the contents of this method with the code editor.
    > /// </summary>
    > private void InitializeComponent()
    > {
    > this.village_Res_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.village_Res_DropDownList_SelectedIndexChanged);
    > this.go_Button.Click += new
    > System.EventHandler(this.go_Button_Click);
    > this.section_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.section_DropDownList_SelectedIndexChanged);
    > this.subSection_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.subSection_DropDownList_SelectedIndexChanged);
    > this.sectionLine_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.sectionLine_DropDownList_SelectedIndexChanged);
    > this.district_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.district_DropDownList_SelectedIndexChanged);
    > this.SDO_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.SDO_DropDownList_SelectedIndexChanged);
    > this.circle_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.circle_DropDownList_SelectedIndexChanged);
    > this.village_DropDownList.SelectedIndexChanged += new
    > System.EventHandler(this.village_DropDownList_SelectedIndexChanged);
    > this.search_Button.Click += new
    > System.EventHandler(this.search_Button_Click);
    > this.Load += new System.EventHandler(this.Page_Load);
    >
    > }
    > #endregion
    >
    > private void BindSectionDropDownlist()
    > {
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSectionRecForReports();
    >
    > section_DropDownList.DataTextField="SectionDesc";
    > section_DropDownList.DataValueField ="sectionId";
    > section_DropDownList.DataSource=dv;
    > section_DropDownList.DataBind();
    > section_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","--Select--"));
    >
    >
    > }
    >
    >
    > private void BindSubSectionDropDownlist()
    > {
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSubSectionRecReports();
    > subSection_DropDownList.DataTextField="SectionDesc";
    > subSection_DropDownList.DataValueField ="sectionId";
    > subSection_DropDownList.DataSource=dv;
    > subSection_DropDownList.DataBind();
    > subSection_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","--Select--"));
    >
    >
    > }
    >
    >
    >
    > private void BindSectionLineDropDownlist()
    > {
    >
    > DataView dv = new DataView();
    > dv = objSectionMaster.GetSectionLineRecReports();
    > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > sectionLine_DropDownList.DataValueField ="SectionLineId";
    > sectionLine_DropDownList.DataSource= dv;
    > sectionLine_DropDownList.DataBind();
    >
    > sectionLine_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","-1"));
    >
    >
    > }
    >
    >
    >
    >
    >
    > private void section_DropDownList_SelectedIndexChanged(object sender,
    > System.EventArgs e)
    > {
    > try
    > {
    >
    > DataSet ds = new DataSet();
    > ds =
    > objSectionMaster.GetSubSectionRecForReports1(Convert.ToInt32(section_DropDownList.SelectedValue));
    >
    > subSection_DropDownList.DataTextField="SectionDesc";
    > subSection_DropDownList.DataValueField ="SectionId";
    > subSection_DropDownList.DataSource=ds;
    > subSection_DropDownList.DataBind();
    >
    > }
    > catch(Exception ex)
    > {
    > Response.Write("<script language=javascript> alert('"+
    > ex.Message.ToString()+"');</script>");
    > }
    >
    >
    > }
    >
    >
    > private void subSection_DropDownList_SelectedIndexChanged(object
    > sender, System.EventArgs e)
    > {
    > try
    > {
    > if(subSection_DropDownList.SelectedValue=="--Select--")
    > {
    > return;
    > }
    >
    > DataView dv = new DataView();
    > dv =
    > objSectionMaster.GetSectionLinesRecForReports(Convert.ToInt32(subSection_DropDownList.SelectedValue));
    > sectionLine_DropDownList.DataTextField="SectionLineDescription";
    > sectionLine_DropDownList.DataValueField ="SectionId";
    > sectionLine_DropDownList.DataSource=dv;
    > sectionLine_DropDownList.DataBind();
    > //resource_Label.Text = sectionLine_DropDownList.SelectedItem.Text;
    > //sectionLine_DropDownList.Items.Insert(0,new
    > ListItem("--Select--","--Select--"));
    > }
    > catch(Exception ex)
    > {
    > Response.Write("<script language=javascript> alert('"+
    > ex.Message.ToString()+"');</script>");
    > }
    > }
    >
    >
    >
    >
    >
    > Tim_Mac wrote:
    >> hi Santosh,
    >> it is difficult to follow your situation. you say that after you change
    >> List3 that it resets the index back to 0 when the page posts back. am i
    >> right in saying that the postback is because List3 has AutoPostBack=true?
    >> the reason i ask is because you don't appear to have a
    >> SelectedIndexChanged
    >> event for List3. so i'm not sure why you would want List3 to post back
    >> itself.
    >>
    >> i hope you can clarify the above question. also, please post your aspx
    >> code
    >> with the 3 lists, and your InitialiseComponent code to make sure you have
    >> wired the events correctly with the menus.
    >>
    >> tim

    >
    Tim_Mac, Sep 14, 2006
    #12
    1. Advertising

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