I need save radgrid state without Button (as telerik example). Its means, dynamically after user click some options of ContextHeaderMenu, drop ans drag column, change with, etc
I try do it using Radgrid inside UpdatePanel,
And execute a tigger when prerender radgrid
but I got an error
Unable to register UpdatePanel with ID. 'UpdatePanel1' because it did not register with ScriptManager. This problem can occur if the UpdatePanel was removed from the control tree and later added again, which is not allowed.
How I can do this?
I try do it using Radgrid inside UpdatePanel,
And execute a tigger when prerender radgrid
but I got an error
Unable to register UpdatePanel with ID. 'UpdatePanel1' because it did not register with ScriptManager. This problem can occur if the UpdatePanel was removed from the control tree and later added again, which is not allowed.
Parameter name: UpdatePanel
How I can do this?