void gvCombinationProducts_RowCommand(object sender, GridViewCommandEventArgs e) { switch (e.CommandName) { case "EditCombination": { BeginCombinationProductEditMode(Convert.ToInt32(e.CommandArgument)); SelecedCombinationProductId = Convert.ToInt32(e.CommandArgument); upnlCombinationProductDetails.Update(); break; } default: break; } }