private void CustomerSetup() { pageName.Text = "Entity Editor - Customer Records"; dataSource = DBAccessHelper.GetUsers(); if (dataSource == null) { dataSource = new DataTable() { Columns = { { "error" }, { "no values found" } } } } ; resultDg.ItemsSource = dataSource.AsDataView(); resultDg.Visibility = form.Visibility = formCustomerData.Visibility = deleteSelectedRecord.Visibility = makeStaffButton.Visibility = saveFormChanges.Visibility = Visibility.Visible; addNewRecord.Visibility = Visibility.Collapsed; }