Hi Rajesh,

note that this portal is used for submitting issues and feature request, and not for a support channel. For support assistance, please submit a support ticket (https://www.telerik.com/account/support-tickets). 

Meanwhile, have a look at the following documentation article to get you started: http://docs.telerik.com/devtools/winforms/gridview/columns/column-types/gridviewcommandcolumn