protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) { //editing if (e.CommandName.Equals("edt")) { Server.TransferRequest("~/Admin/EditTraining.aspx?tid=" + e.CommandArgument); } //Delete if (e.CommandName.Equals("del")) { int id = int.Parse(e.CommandArgument.ToString()); int a = 2; mtr.Delete(id); List <TMSEntityLayer.EF.Training> tlist = mtr.GetAll(); gridDisplay(tlist); } }