private async void FinalizeAdd_btn_Click(object sender, RoutedEventArgs e) { addSalesPersonError_lbl.Content = ""; if (!Int32.TryParse(salesPersonId_txtblk.Text, out int salesPersonId)) { addSalesPersonError_lbl.Content = "Only Integer SalesPersonId's Please"; return; } if (!Int32.TryParse(relationTypeId_txtblk.Text, out int relationTypeId)) { addSalesPersonError_lbl.Content = "Only integer RelationTypeId's, please"; return; } var response = await _districtService.CreateSalesPersonToDistrict(_district.DistrictId, salesPersonId, relationTypeId); if (response.HttpResponse == HttpStatusCode.OK) { addSalesPersonToDistrict_grid.Visibility = Visibility.Hidden; } addSalesPersonError_lbl.Content = response.Message; }