<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server" PopupControlID="PopUpTbl" TargetControlID="lblReport">
</ajaxToolkit:ModalPopupExtender>
this is my coding.... i want the total control will disable when popup window show.... but i cant do this............. dont confuse...
TargetControlID="lblReport" is just for fill this column.actually ,popup windows show in runtime....