Batch modification in ASP.NET

I have a page on my website where I have a list of climbs with a checkbox next to each one. I'd like to allow my user to check/uncheck each line and then click "update" to make all the changes at once.

Is there a way I can easily do this with GridView or Repeater, something else, or will I need to hand-code it?

Comments

• Anonymous
  January 24, 2006
  I've done this a number of times with a GridView control. While there may be other ways to do it, the way I've done it is to add a TemplateField, like:
  
  <asp:TemplateField HeaderText="Select?">
  <HeaderStyle HorizontalAlign="Left"/>
  <ItemTemplate>
  <asp:Checkbox ID="chkRowSelected" runat="server" />
  </ItemTemplate>
  </asp:TemplateField>
  
  Each row in the GridView then gets a control with the specified ID. Then, in the handler for your Update button, you can iterate through all the GridView rows:
  
  foreach (GridViewRow row in idOfGridView.Rows)
  
  then find the checkbox control:
  
  CheckBox cb = row.FindControl("chkRowSelected") as CheckBox;
  
  and then test to see if it's been checked or not:
  
  if ((cb != null) && (cb.Checked == true))
  
  After that, perform your update for the row.
  
  Hope that helps,
  
  Donnie
• Anonymous
  January 24, 2006
  I'm thinking that qualifies as hand-coding it...
  
  
• Anonymous
  January 25, 2006
  Thanks, Donnie, that's exactly what I was looking for.
• Anonymous
  February 22, 2006
  I'm trying to accomplish the same thing but in VB.Net.  My problem is the checkbox(s) always evaluate to false.  Here's some code:
  
  Protected Sub btnMakeNew_Click(ByVal sender As Object, ByVal e As System.EventArgs)
         'Dim vCheckArray As Array
         Dim vRow As GridViewRow
         Dim xyz As CheckBox
         
         For Each vRow In VoiceMailGrid.Rows
             'Response.Write(vRow.RowIndex())
             'Response.End()
             
             xyz = vRow.FindControl("CheckBox1")
             
             If xyz.Checked = True Then
                 Response.Write(xyz.Checked())
                 Response.End()
             End If
         Next
     End Sub
  
  and the template definition:
  
  <asp:TemplateField HeaderText="Hello World">
      <ItemTemplate>
           <asp:CheckBox ID="CheckBox1" runat="server" />
      </ItemTemplate>
  </asp:TemplateField>
  
  
  Cheers,
  rfm