protected void grdUser_ItemCommand(object source, DataGridCommandEventArgs e) { string strCA = e.CommandArgument.ToString(); switch (e.CommandName) { case "Edit": Insert = false; Id = strCA; List <CityInfo> ListCity = CityService.CityInfo_GetByAll(); List <DistrictInfo> Listdistric = DistrictService.DistrictInfo_GetById(Id); txtDistrictID.Text = Listdistric[0].DistrictID; //ddlCity.SelectedIndex = ListCity[0]. txtDistrictName.Text = Listdistric[0].DistrictName; pnView.Visible = false; pnUpdate.Visible = true; break; case "Delete": DistrictService.DistrictInfo_Delete(strCA); BindGrid(); break; } }