Question

Telerik’s RadGrid displays value twice, if GridTemplateColumn has UniqueName attribute and <ItemTemplate> tag.

<telerik:GridTemplateColumn HeaderText="Name" UniqueName="Name">
    <ItemTemplate><%# Eval("Name") %></ItemTemplate>
    <EditItemTemplate><asp:TextBox ID="txtProductName" runat="server" Text='<%# Eval("Name") %>' Width="100%" MaxLength="256" /></EditItemTemplate>
</telerik:GridTemplateColumn>

If I remove ItemTemplate tag, it displays the value just once, but I would like to format the value conditionally, for which I think I need ItemTemplate tag as I dont want to update my object’s property (in this case, Name) itself.

I need UniqueName attribute as its used in NestedHierarchy tables. How do I keep control over the display value and display it just once?

One more problem with having ItemTemplate tag is, the Expand/Collapse buttons are not present in the grid. I want them to be present.

Answer 1

You can alter the column on item data bind event RadGrid1_ItemDataBound.

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
     if (e.Item is GridDataItem && !e.Item.IsInEditMode)
     {
         var dataBoundItem = e.Item as GridDataItem;
         var dto = (yourDto)e.Item.DataItem;
         dataBoundItem["Name"] = dto.Name + " special";
     }
}