This message was discovered on ASPFriends.com 'aspngescalate' list.
| Chris Kinsman |
I am stuck on this one.
I have a CheckBoxList which is used as part of an EditItemTemplate in a
DataGrid.
I set it's DataSource via an inline DataBinding expression like this:
<asp:TemplateColumn
HeaderText="<b>Roles</b>">
<EditItemTemplate>
<asp:checkboxlist
id="chkRoleList" runat="server" DataTextField="GroupName"
DataValueField="GroupId" Font-Size="10" DataSource='<%#
GetRoleList((string)DataBinder.Eval(Container.DataItem, "Email")) %>' />
</EditItemTemplate>
</asp:TemplateColumn>
The problem I am running into is how do I show which roles are selected?
I tried using OnPreRender but it doesn't appear to be called when in a
DataGrid.
OnLoad() is prior to the DataBind.
In the OnEditCommand for the grid the CheckBoxList hasn't been created
yet. It almost feels like this thing either needs another event or a
property that can be used to data bind the selections.
Any ideas?
Chris
|
|
| |
| |
| Alex Lowe |
Chris,
You could do something like this (instead of setting the DataSource,
etc. in the declaration):
1) Modify the declaration to look something like this...
<asp:checkboxlist id="chkRoleList"
runat="server"
Font-Size="10" />
2) Wire your DataGrid to the OnItemDataBound event similar to this....
Public Sub DataGrid_ItemDataBound(sender As Object, e As
DataGridItemEventArgs)
Dim itemType As ListItemType = e.Item.ItemType
If (itemType = ListItemType.EditItem) Then
Dim myCheckBoxList As CheckBoxList =
CType(e.Item.FindControl("chkRoleList"), CheckBoxList)
Dim myRow As DataRowView = CType(e.Item.DataItem, DataRowView)
Dim myEmail As String = myRow("Email").ToString()
myCheckBoxList.DataTextField = "GroupName"
myCheckBoxList.DataValueField = "GroupId"
myCheckBoxList.DataSource = GetRoleList(myEmail)
myCheckBoxList.DataBind()
'I don't see how/where you get the selected items from your
message
'but you would cycle through them and use a line similar to the
'one below to select the appropriate items
myCheckBoxList.Items.FindByValue("yourcheckboxitemvalue").Selected
= true
End If
End Sub
It's not perfect and a property/collection or some other built-in
mechanism would be ideal - but I don't believe one exists.
Hth,
Alex - AspFriends.com Moderation Team
Microsoft MVP - ASP.NET
***********************************************************
Have a question about using client side coding in your ASP.NET pages?
Send your question to [aspngclient]
(http://www.aspfriends.com/aspfriends/aspngclient.asp)
***********************************************************
-----Original Message-----
From: Chris Kinsman [mailto:Click here to reveal e-mail address]
Sent: Thursday, February 21, 2002 10:36 AM
To: aspngescalate
Subject: [aspngescalate] CheckBoxList Selection when used in
EditItemTemplate for DataGrid
I am stuck on this one.
I have a CheckBoxList which is used as part of an EditItemTemplate in a
DataGrid.
I set it's DataSource via an inline DataBinding expression like this:
<asp:TemplateColumn
HeaderText="<b>Roles</b>">
<EditItemTemplate>
<asp:checkboxlist
id="chkRoleList" runat="server" DataTextField="GroupName"
DataValueField="GroupId" Font-Size="10" DataSource='<%#
GetRoleList((string)DataBinder.Eval(Container.DataItem, "Email")) %>' />
</EditItemTemplate>
</asp:TemplateColumn>
The problem I am running into is how do I show which roles are selected?
I tried using OnPreRender but it doesn't appear to be called when in a
DataGrid.
OnLoad() is prior to the DataBind.
In the OnEditCommand for the grid the CheckBoxList hasn't been created
yet. It almost feels like this thing either needs another event or a
property that can be used to data bind the selections.
Any ideas?
Chris
| [aspngescalate] member Click here to reveal e-mail address = YOUR ID |
http://www.asplists.com/asplists/aspngescalate.asp = JOIN/QUIT
|
|
| |
|
|
|
|
|
