Fix to RadNumericTextBox declarative binding error "Specified cast is not valid"

 <telerik:GridTemplateColumn HeaderText="No of  Subscribers">
          <ItemTemplate>
               <%#Eval("SentToCount") %>
          </ItemTemplate>
          <EditItemTemplate>
              <telerik:RadNumericTextBox ID="rnSentCount" runat="server" MaxValue="1000000"
CausesValidation="True"   NumberFormat-DecimalDigits="0" DataType="Int32"  MinValue="1" 
DbValue='<%#Bind("SentToCount") %>'/>
          </EditItemTemplate>
          <InsertItemTemplate>
              <telerik:RadNumericTextBox ID="rnSentCount" runat="server" MaxValue="1000000"
CausesValidation="True" NumberFormat-DecimalDigits="0" DataType="Int32"  MinValue="1"
DbValue='<%#Bind("SentToCount") %>'/>
           </InsertItemTemplate>
 </telerik:GridTemplateColumn>

  <%#Bind ()%> will not work with Value property so use DbValue instead and it will
 work like a charm. Why intellisense doesnt display DbValue : good question ... to telerik :)