datalist disappears on edit bind

Discussion in 'ASP .Net Datagrid Control' started by Robert Sindall, Jul 15, 2004.

  1. Hi

    I have a simple datalist which displays a list of typenames. it will list
    from a datasource and let me add.
    But on the Edit bind the list disappears without an error message.

    see code

    ----VB----

    Public Class CM_AddressTypeList
    Inherits System.Web.UI.Page

    Protected WithEvents AddressTypeList As
    System.Web.UI.WebControls.DataList
    Protected WithEvents AddAddressType As System.Web.UI.WebControls.Button

    #Region " Web Form Designer Generated Code "

    'This call is required by the Web Form Designer.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub
    InitializeComponent()

    End Sub

    Private Sub Page_Init(ByVal sender As System.Object, ByVal e As
    System.EventArgs) Handles MyBase.Init
    'CODEGEN: This method call is required by the Web Form Designer
    'Do not modify it using the code editor.
    InitializeComponent()
    End Sub

    #End Region

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
    System.EventArgs) Handles MyBase.Load

    If Not IsPostBack Then

    BindData()

    End If

    End Sub

    Private Sub BindData()

    Dim myAddressDetails As New CM_AddressType()
    AddressTypeList.Visible = True
    AddressTypeList.DataSource = myAddressDetails.GetAddressTypes
    AddressTypeList.DataBind()
    AddressTypeList.ShowHeader = True

    If AddressTypeList.Items.Count = 0 Then
    AddressTypeList.Visible = False
    End If

    End Sub

    Private Sub AddAddressType_Click(ByVal sender As Object, ByVal e As
    System.EventArgs) Handles AddAddressType.Click

    Dim dt As New DataTable()
    Dim dv As New DataView(dt)
    Dim dr As DataRow

    'Set Table Columns
    dt.Columns.Add(New DataColumn("TypeID", GetType(Integer)))
    dt.Columns.Add(New DataColumn("TypeName", GetType(String)))
    dt.Columns.Add(New DataColumn("DateCreated", GetType(Date)))
    dt.Columns.Add(New DataColumn("DateModified", GetType(Date)))

    dr = dt.NewRow()
    dr(0) = 0
    dr(1) = ""
    dr(2) = Date.Now
    dr(3) = Date.Now
    dt.Rows.Add(dr)

    AddressTypeList.DataSource = dv
    AddressTypeList.EditItemIndex = 0
    AddressTypeList.DataBind()
    AddressTypeList.Visible = True
    AddressTypeList.ShowHeader = False

    End Sub

    Private Sub AddressTypeList_UpdateCommand(ByVal source As Object, ByVal
    e As System.Web.UI.WebControls.DataListCommandEventArgs) Handles
    AddressTypeList.UpdateCommand

    Dim TypeID As Integer = CType(e.CommandArgument, Integer)
    Dim TypeName As String = CType(e.Item.FindControl("txtTypeName"),
    TextBox).Text

    Dim myAddressDetails As New CM_AddressType()
    TypeID = myAddressDetails.UpdateAddressType(TypeID, TypeName)

    If TypeID <> 0 Then

    'DO something

    End If

    AddressTypeList.EditItemIndex = -1
    BindData()

    End Sub

    Private Sub AddressTypeList_CancelCommand(ByVal source As Object, ByVal
    e As System.Web.UI.WebControls.DataListCommandEventArgs) Handles
    AddressTypeList.CancelCommand

    AddressTypeList.EditItemIndex = -1
    BindData()

    End Sub

    Private Sub AddressTypeList_EditCommand(ByVal source As Object, ByVal e
    As System.Web.UI.WebControls.DataListCommandEventArgs) Handles
    AddressTypeList.EditCommand

    Try
    AddressTypeList.EditItemIndex = e.Item.ItemIndex
    AddressTypeList.DataBind()
    AddressTypeList.Visible = True
    AddressTypeList.ShowHeader = False

    Catch ex As Exception

    Throw ex

    End Try

    End Sub

    End Class

    -----------

    ----ASPX-----
    <%@ Page Language="vb" AutoEventWireup="false"
    Codebehind="CM_AddressTypeList.aspx.vb"
    Inherits="zethics.CM_AddressTypeList"%>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <HTML>
    <HEAD>
    <title>Address Type List</title>
    <LINK href="/Generation.css" type="text/css" rel="stylesheet">
    <meta content="JavaScript" name="vs_defaultClientScript">
    <meta content="http://schemas.microsoft.com/intellisense/ie5"
    name="vs_targetSchema">
    </HEAD>
    <body class="ap">
    <form id="Form1" method="post" runat="server">
    <table cellSpacing="5" cellPadding="0" width="100%" border="0">
    <tr>
    <td>
    <table class="Admintbl" cellSpacing="2" cellPadding="2" width="100%"
    border="0">
    <TR>
    <TD class="Admintblhdr" colSpan="2">&nbsp;Address Type List</TD>
    </TR>
    <tr>
    <td colSpan="2"><asp:datalist id="AddressTypeList" Runat="server"
    Width="100%" ShowHeader="True" CellSpacing="2" CellPadding="2"
    GridLines="None" Visible="True" EnableViewState="True"
    CssClass="AdminNormal">
    <HeaderTemplate>
    <table Class="AdminTblHdr" cellpadding="2" cellspacing="0"
    border="0" width="100%">
    <tr>
    <td width="60">TypeID</td>
    <td>TypeName</td>
    <td width="150">DateCreated</td>
    <td width="150">DateModified</td>
    <td width="80">Edit</td>
    </tr>
    </table>
    </HeaderTemplate>
    <EditItemStyle CssClass="admintblitm"></EditItemStyle>
    <AlternatingItemStyle
    CssClass="Admintblalt"></AlternatingItemStyle>
    <ItemStyle CssClass="admintblitm"></ItemStyle>
    <ItemTemplate>
    <TABLE class="AdminNormal" id="Table5" cellSpacing="2"
    cellPadding="2" width="100%" border="0">
    <TR>
    <TD width="60"><%# DataBinder.Eval(Container.DataItem,
    "TypeID") %></TD>
    <TD><%# DataBinder.Eval(Container.DataItem, "TypeName") %></TD>
    <TD width="150"><%# DataBinder.Eval(Container.DataItem,
    "DateCreated") %></TD>
    <TD width="150"><%# DataBinder.Eval(Container.DataItem,
    "DateModified") %></TD>
    <TD width="80">
    <asp:LinkButton id=LnkEdit Runat="server" Text="Edit"
    CommandArgument='<%# DataBinder.Eval(Container.DataItem, "TypeID") %>'
    CommandName="Edit">
    </asp:LinkButton></TD>
    </TR>
    </TABLE>
    </ItemTemplate>
    <HeaderStyle CssClass="Admintblhdr"></HeaderStyle>
    <EditItemTemplate>
    <TABLE class="AdminTbl" cellSpacing="2" cellPadding="2"
    width="100%" border="0">
    <TR>
    <TD class="AdminTblHdr" colSpan="2">&nbsp;Address Type:</TD>
    </TR>
    <TR>
    <TD class="AdminTblAlt" width="120">&nbsp;Type Name:</TD>
    <TD><asp:TextBox id=txtTypeName Runat="server" Text='<%#
    DataBinder.Eval(Container.DataItem, "TypeName") %>' CssClass="AdminEditBox">
    </asp:TextBox></TD>
    </TR>
    <TR>
    <TD></TD>
    <TD><asp:Button id=ApplyChanges Runat="server" Text="Apply
    Changes" CssClass="AdminButton" CommandArgument='<%#
    DataBinder.Eval(Container.DataItem, "TypeID") %>' CommandName="Update">
    </asp:Button>&nbsp;
    <asp:Button id="BtnCancel" runat="server" Text="Cancel"
    CssClass="AdminButton" CommandName="Cancel"></asp:Button></TD>
    </TR>
    </TABLE>
    </EditItemTemplate>
    </asp:datalist></td>
    </tr>
    <tr>
    <td><asp:button id="AddAddressType" Runat="server" Text="Add Address
    Type" CssClass="AdminButton"></asp:button></td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </form>
    </body>
    </HTML>
    ----------------
     
    Robert Sindall, Jul 15, 2004
    #1
    1. Advertising

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. Nevyn Twyll
    Replies:
    8
    Views:
    1,916
  2. =?Utf-8?B?QVNQIERldmVsb3Blcg==?=

    How do you bind a datalist that is inside a bound datalist

    =?Utf-8?B?QVNQIERldmVsb3Blcg==?=, Sep 25, 2006, in forum: ASP .Net
    Replies:
    2
    Views:
    587
    =?Utf-8?B?QVNQIERldmVsb3Blcg==?=
    Sep 26, 2006
  3. Josh Behl

    DataGrid Disappears when I click on Edit

    Josh Behl, Dec 3, 2003, in forum: ASP .Net Datagrid Control
    Replies:
    2
    Views:
    167
    josh behl
    Dec 3, 2003
  4. Assimalyst

    DataGrid Row Disappears when click edit??

    Assimalyst, Oct 4, 2005, in forum: ASP .Net Datagrid Control
    Replies:
    1
    Views:
    113
    Assimalyst
    Oct 4, 2005
  5. strJulioNegron

    DataGrid disappears when clicking on "Edit" link

    strJulioNegron, Jan 12, 2006, in forum: ASP .Net Datagrid Control
    Replies:
    2
    Views:
    140
    Julio Negron
    Jan 18, 2006
Loading...

Share This Page