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Hello all,

I synchronize a combobox with an outer listview Element with a DataTable and a column named "Status", which is working: combobox -> listview.

Now I need to write the DataTable value "Status" into the combobox, which I cannot accomplish:
combobox <- listview.

This is needed for example, when returning to the Window with the combobox, after showing a different window. The ListView has always a DataTable with the right "Status" set.

One question I have now is: how can I access ComboBox "comboBoxStatus" from Code Behind? It should be visible, but I cannot see it with code completion. ListView "listView1" on the other hand is accessible. How come?

Thanks in advance
leder

I have combined listview with combobox that way in XAML:



<Grid Background="LightSteelBlue">
<Grid Background="LightSteelBlue">


<ListView Name="listView1" ItemsSource="{Binding}" Background="LightSteelBlue" Visibility="Visible" FontSize="14" IsEnabled="True" Margin="227,67,20,72" IsTextSearchEnabled="True" IsHitTestVisible="True" IsSynchronizedWithCurrentItem="false">
               <ListView.View>
                   <GridView ColumnHeaderContainerStyle="{StaticResource HeaderStyle}">
                       <GridViewColumn Width="200" DisplayMemberBinding="{Binding Path=Name}" />
                       <GridViewColumn Width="20" DisplayMemberBinding="{Binding Path=Status}" />
                       <GridViewColumn Width="200">
                           <GridViewColumn.CellTemplate>
                               <DataTemplate>
                                   <ComboBox x:Name="comboBoxStatus"

                                     Style="{DynamicResource ButtonlessComboBoxStyle}"

                                     Width="180" Height="Auto" BorderThickness="0" Background="LightSteelBlue"

                                     ItemsSource="{Binding Source={StaticResource dataFromEnum}}"

                                     SelectedItem="{Binding Path=OperationState, Mode=TwoWay}"

                                     SelectionChanged="comboBox_SelectionChanged"

                                     HorizontalAlignment="Right" VerticalAlignment="Center" HorizontalContentAlignment="Center" IsSynchronizedWithCurrentItem="False" IsReadOnly="False"

                                     >
                                       <ComboBox.ItemTemplate>
                                           <DataTemplate>
                                               <Label  Content="{Binding   Path=.,Mode=OneWay,
                                              Converter={StaticResource enumItemsConverter}}"

                                              Height="Auto"

                                              Margin="0"

                                              VerticalAlignment="Center"/>
                                           </DataTemplate>
                                       </ComboBox.ItemTemplate>
                                   </ComboBox>
                               </DataTemplate>

                           </GridViewColumn.CellTemplate>
                       </GridViewColumn>
                   </GridView>
               </ListView.View>
           </ListView>

</Grid>
      <Border Height="61" HorizontalAlignment="Left" Name="border1" VerticalAlignment="Top" Width="191" CornerRadius="0,0,20,0" BorderThickness="1,2" Opacity="2" Padding="0" BorderBrush="Black" Margin="-9,-12,0,0" />
      <Label Height="30" HorizontalAlignment="Left" Margin="20,11,0,0" Foreground="SlateGray" FontSize="14" FontStyle="Italic" FontWeight="Bold" Name="label2" VerticalAlignment="Top" Width="212">First Boot Assistent</Label>
      <Label Height="29" Margin="208,12,46,0" Foreground="SlateGray" FontSize="14" FontStyle="Italic" FontWeight="Bold" Name="label1" VerticalAlignment="Top">System - Recovery</Label>
      <Label Margin="20,66.845,0,72" Name="label3" HorizontalAlignment="Left" Width="184" BorderThickness="1" Background="Transparent" BorderBrush="Bisque">Hier einführender Text ...</Label>
      <Button Height="33" HorizontalAlignment="Right" Margin="0,0,20,17" Name="button1" VerticalAlignment="Bottom" Width="70" Click="button1_Click">Start</Button>
      <Button Height="33" HorizontalAlignment="Left" Margin="20,0,0,17" Name="button2" VerticalAlignment="Bottom" Width="70" Click="button2_Click">Zurück</Button>
      <Button Height="33" Margin="183,0,176,17" Name="button3" VerticalAlignment="Bottom" Click="button3_Click">Konfiguration komplett löschen</Button>
</Grid>



C# Code Behind:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

using System.Data;
using FirstBootAssistent.Logic;
using FirstBootAssistent.Utility;
using FirstBootAssistent.ValueConverters;

using FirstBootAssistent.Resources;

namespace FirstBootAssistent.GUI
{
    /// <summary>
    /// Interaktionslogik für RecoveryConfig.xaml
    /// </summary>
    public partial class RecoveryConfig : Window
    {
        private FBAservice fbaService;        

        public RecoveryConfig(FBAservice service)
        {
            InitializeComponent();
            fbaService = service;
            
            // ListView mit Daten aus der Tabelle füllen
            listView1.DataContext = fbaService.Tabele();

            //((ComboBox)this.listView1.Items.GetItemAt(0)).ItemsSource = (IEnumerable<int>)fbaService.Tabele();
        }

        // Starten
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            // Warnung vor der Ausführung anzeigen
            Window recoveryWarning = new RecoveryWarning(fbaService);
            this.Close();
            recoveryWarning.ShowDialog();            
        }

        // Zurück zur Startmaske
        private void button2_Click(object sender, RoutedEventArgs e)
        {
            // Maske für Recovery-Start anzeigen
            Window recoveryStart = new RecoveryStart(fbaService);
            this.Close();
            recoveryStart.ShowDialog();
        }

        // Konfiguration komplett löschen
        private void button3_Click(object sender, RoutedEventArgs e)
        {
            // Alle Konfigurationsoptionen auf löschen einstellen
            if (!fbaService.ResetAllConfigurationData())
            {
                MessageBox.Show("Einige Daten konten nicht komplett gelöscht werden!", "FBA-Konfiguration",MessageBoxButton.OK, MessageBoxImage.Warning);
            }

            // Maske für abgeschlossen Prozess anzeigen
            Window recoveryFinish = new RecoveryFinish();
            this.Close();
            recoveryFinish.ShowDialog();                
        }

        private void comboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            try
            {
                DependencyObject dep = (DependencyObject)e.OriginalSource;
                while ((dep != null) && !(dep is ListViewItem))
                    dep = VisualTreeHelper.GetParent(dep);
                if (dep == null)
                    return;

                DataRowView item = (DataRowView)listView1.ItemContainerGenerator.ItemFromContainer(dep);
                DataRow dr = fbaService.Tabele().Rows.Find((int)item[FirstBootAssistent.Utility.DataService.TABLE_COLUMN_ID]);
                OperationState myAuswahl = (OperationState)e.AddedItems[0];

                Console.Write("Anwendung: " + dr[FirstBootAssistent.Utility.DataService.TABLE_COLUMN_ID]);
                Console.WriteLine("\tStatus: " + myAuswahl);

                fbaService.SetConfigData((int)dr[FirstBootAssistent.Utility.DataService.TABLE_COLUMN_ID], (int)myAuswahl);
                listView1.DataContext = fbaService.Tabele();

               
            }
            catch (Exception ex)
            {
                System.Console.WriteLine(ex.Message);
            }
        }
    }
}
Posted
Updated 13-May-11 0:35am
v4
Comments
BobJanova 13-May-11 5:35am
   
Edited to add WPF tag.

The short answer is: don't, use data binding and have the combo's SelectedIndex property bound to something which gets updated along with the list box. In your case that appears to be 'OperationState': wherever you are updating Name and Status, also fire a PropertyChanged event on OperationState.

The combo is not visible in global scope because it is not one combo, it is a combo within a data template so it is replicated.
   
Thanks Bob!

The only change I made to the XAML of the combobox is:
SelectedIndex="{Binding Path=Status}"


And it works like a charm...

Bye
leder
   

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