[Solved] Problem with rebinding Listbox inside TemplateColumn

[Tobias]

Hi,

I have a page with a grid on it. The grid is edited by the nice Inline form thats available. I have a couple of columns and a template column with a small table with a listbox and a dropdown and two buttons Add and Remove.

What I want to do is that when the user selects an item in the Combobox and press Add the item should appear in the Listbox. And when I select an item in the listbox and press Remove the Item should of course be removed.

Everything is working great, Ajax and all... But when I press the Add button and my ItemCommand fires I'm not able to find the Listbox again. I can't even find out that the row is editable.

Best Regards
Daniel

[Shinu]

Hi Daniel,

You can set the CommandName of the Add button or Remove button and then try out the following code to achieve the scenario.

ASPX:

<telerik:GridTemplateColumn UniqueName="TempCol1">
<ItemTemplate>

</ItemTemplate>
<EditItemTemplate>
   <table id="Table1">
   <tr>
       <td>
           <br />
           <telerik:RadComboBox ID="RadComboBox1" runat="server">
               <Items>
                   <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem1" Value="RadComboBoxItem1" />
                   <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem2" Value="RadComboBoxItem2" />
                   <telerik:RadComboBoxItem runat="server" Text="RadComboBoxItem3" Value="RadComboBoxItem3" />
               </Items>
               <CollapseAnimation Duration="200" Type="OutQuint" />
           </telerik:RadComboBox>
       </td>
       <td>
       </td>
    <td>
        <asp:ListBox ID="ListBox1" runat="server" Height="56px"></asp:ListBox></td>
   </tr>
   <tr>
       <td>
           <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Add" CommandName="Add" />&nbsp;
           <asp:Button ID="Button2" runat="server" Text="Remove" CommandName="Remove" /></td>
       <td>
       </td>
   <td>
   </td>
   </tr>
   </table>
</EditItemTemplate>
</telerik:GridTemplateColumn>

CS:

protected void RadGrid1_ItemCommand(object source, GridCommandEventArgs e)
{
    if (e.CommandName == "Add")
    {
        Button btn = (Button)e.CommandSource;
        GridEditFormItem editItem = (GridEditFormItem)btn.NamingContainer; //
        string str = (editItem.FindControl("RadComboBox1") as RadComboBox).SelectedItem.Text;
        (editItem.FindControl("ListBox1") as ListBox).Items.Add(str);
    }
    else if (e.CommandName == "Remove")
    {
        Button btn = (Button)e.CommandSource;
        GridEditFormItem editItem = (GridEditFormItem)btn.NamingContainer; //
        ListBox listbox1 = (ListBox) (editItem.FindControl("ListBox1"));
        if(listbox1.SelectedItem != null)
        {
            string str =  listbox1.SelectedItem.Text;
            listbox1.Items.Remove(str);
        }
    }
}

Thanks,
Shinu.

[Tobias]

Thanks,

It worked perfectly.

//Daniel