In headercontextmenu columns items a checkbox is used to check uncheck columns but i need click command on whole menuItem not just checkbox. There is no click event at server side not even at client side.
At Client side I found this: grid._getHeaderContextMenu().get_itemData()["3"].items[0]
but it has only three attributes 1.Postback 2.Value 3.Templated
but I need click event.
for reference see this link... http://demos.telerik.com/aspnet-ajax/grid/examples/generalfeatures/headercontextfiltermenu/defaultcs.aspx
right click on header see columns menu items