RowCancelingEdit and RowEditing take two mouse-clicks to work?

D

dev648237923

I have a simple GridView. I need to do the Select and Edit in the code
behind because I have to change schema prefix in the sql statement depending
on the current user.

I have the data grid and I have event handlers for edit and cancel but an
odd thing happes: I have to click the Edit link twice for it to work and I
need to click the Cancel link twice for it to work (the first postback does
call my funcs but does not have any effect on how the grid looks -- I have
to click the second time to get Update, Cancel to showup on the grid?). Is
the below the correct way to do this? Thank you!

<asp:gridview id="gv1" runat="server"
AutoGenerateColumns="False"
OnRowEditing="gv1_RowEditing"
OnRowCancelingEdit="gv1_RowCancelingEdit">
<Columns>
<asp:CommandField ShowEditButton="True" />
<asp:BoundField DataField="id" ReadOnly="True" />
...more bound fields go here
</Columns>
</asp:gridview>

protected void gv1_RowEditing(object sender, GridViewEditEventArgs e)
{
gv1.EditIndex = e.NewEditIndex;
//then call my sql to do the edit
}
protected void gv1_RowCancelingEdit(object sender,
GridViewCancelEditEventArgs e)
{
gv1.EditIndex = -1;
}

p.s. I know it would be easier/better to design the db around this (have a
usp and pass what schema to use, etc. but I am stuck with it this way so
must do this on the asp.net side
 
S

Steven Cheng[MSFT]

Hello dev648237923,

From your description, you're gettnig some strange behavior(need two time
to make Gridview change status) when using GridView to display and edit
data from database, correct?

As for the GridView databinding, are you using an associated DataSource
control(SqlDataSource or ObjectDataSource) or manually set the DataSource
property and call DataBind method ?

For Gridview, if you're using associated DataSource control to populate
data, it will automatically handle the selecting, editing and updating
events. However, if you manually bind the data, you need to manually hook
those events (like RowEditing, RowUpdating, RowCancelingEdit ...) in code.
Also, in each of such event, since you manually bind data to the GridView,
you also need to do the databinding in each of those event because after
each of such event, GridView need to repopulate the Rows collection. e.g.

========================
.....................
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
GridView1.DataSource =
SqlDataSource1.Select(DataSourceSelectArguments.Empty);
GridView1.DataBind();
}

protected void GridView1_RowCancelingEdit(object sender,
GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;

GridView1.DataSource =
SqlDataSource1.Select(DataSourceSelectArguments.Empty);
GridView1.DataBind();
}

...............
===========================

If you feel necessary I can send you a test page for reference. Please feel
free to let me know if you have any further questions or any thing
particular in your scenario.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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D

dev648237923

Thank you for your ideas -- they fixed the problem which was I was not
calling GridView1.DataBind() in th event handlers.
Thank you!
 
S

Steven Cheng[MSFT]

That's great!

Have a good day!

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.
 

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