Can't FindControl

[tim]

I'm having problems finding a control in my grid.  I've been stuck on this for a couple of days and have searched the forums, following examples and links to documentation, with no luck.  Here's a snippet from the aspx page.

 <telerik:GridTemplateColumn UniqueName="ddHeader" HeaderText="Header">
   <EditItemTemplate>
     <asp:DropDownList ID="HeaderDropDown" runat="server" />
   </EditItemTemplate>
 </telerik:GridTemplateColumn>

And here's a snippet from code behind.

private void Grid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridEditableItem)
        {
            GridEditableItem item = e.Item as GridEditableItem;
            Dictionary<string, string> dict = new Dictionary<string, string>();
            dict = ReadHeader();
            DropDownList list =item.FindControl("HeaderDropDown") as DropDownList;
            list.DataSource = dict;
            list.DataBind();
        }
    }

DropDownList list =item.FindControl("HeaderDropDown") as DropDownList;  always returns null.

What am I not getting here?

Thanks,

[Daniel]

Hello Tim,

You can access the DropDownList only when the corresponding item is in Edit mode. Please try to change your code as shown below:

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
    if (e.Item.IsInEditMode)
    {
        GridEditableItem item = e.Item as GridEditableItem;
        ...
        DropDownList list = item.FindControl("HeaderDropDown") as DropDownList;
        ...
    }
}

Best regards,
Daniel
the Telerik team

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[tim]

I'm not getting to the code:

 private void Grid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item.IsInEditMode)
        {
            GridEditableItem item = e.Item as GridEditableItem;
            Dictionary<string, string> dict = new Dictionary<string, string>();
            dict = ReadHeader();
            DropDownList list = item.FindControl("HeaderDropDown") as DropDownList;
            list.DataSource = dict;
            list.DataBind();
        }
    }

Do I need to put something in the <telerik:RadGrid ID="Grid1" AutoGenerateColumns="false" runat="server" Skin="Web20" Width="90%"> tag?

Thanks.

[Shinu]

Hello Tim,

The sample code given by Daniel is working as expected when I tried on my end. I am not quite sure about your code. Have you used FormTemplate other than adding EditItemTemplate, which can be a reason for unable to access the DropdownList from code?

If you could provide us the complete code that you tried, it will be very helpful.

-Shinu.

[JazzBox]

did you figure this out?