Transfer RadListBoxItems with ItemTemplates

HOW-TO

Transfer RadListBoxItems with ItemTemplates, evaluated from the datasource.

## SOLUTION
When the values from the attributes(assigned from the DataItem) are used to be evaluated in the ItemTemplate in the following manner,

<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# DataBinder.Eval(Container, "Attributes[\"ContactName\"]")%>'></asp:Label>
<asp:Label ID="Label2" runat="server" Text='<%# DataBinder.Eval(Container, "Attributes[\"City\"]")%>'></asp:Label>
</ItemTemplate>

the DataBind() method should be explicitly called for each RadListBoxItem, when a transfer operation is performed. This is needed, because the DataItem is nullified, once the datasource is bound to the SourceListBox. The appropriate event-handler for implementing the above is the OnTransferred event handler:

protected void SourceListBox_Transferred(object sender, RadListBoxTransferredEventArgs e)
{
      foreach (RadListBoxItem item in e.Items)
      {
         item.DataBind();
      }
   }

Protected Sub SourceListBox_Transferred(ByVal sender As Object, ByVal e As RadListBoxTransferredEventArgs)
    For Each item As RadListBoxItem In e.Items
        item.DataBind()
    Next
End Sub

A sample project that demonstrates the approach can be found attached here