WPF ArrêtTabulation/TabIndex dans ItemsControl

Question

Je suis dynamiquement ajouter WPF ComboBoxes et je veux être en mesure de sélectionner les ComboBoxes ajoutés avec le « TAB » touche. (Générer Dynamiquement TabIndex ou quelque chose)

Comme il est en fait:

alt text http://i50.tinypic.com/25jig6p.png

Ce que je veux:

alt text http://i48.tinypic.com/sb6gc5.png

Comment voulez-vous faire?

Voici le code:

<ItemsControl ItemsSource="{Binding}" Name="myItemsControl"> 
    <ItemsControl.ItemTemplate> 
     <DataTemplate> 
      <Grid> 
       <Grid.ColumnDefinitions> 
        <ColumnDefinition Width="3*"/> 
        <ColumnDefinition Width="*"/> 
        <ColumnDefinition Width="Auto"/> 
       </Grid.ColumnDefinitions> 

       <Grid.RowDefinitions> 
        <RowDefinition Height="Auto"/> 
       </Grid.RowDefinitions> 

       <ComboBox Grid.Column="0" ItemsSource="{Binding Source={StaticResource SomeItems}}" IsSynchronizedWithCurrentItem="False" SelectedItem="{Binding Path=SomeValue, Mode=TwoWay}" DisplayMemberPath="Name" TabIndex="20"/> 
       <ComboBox Grid.Column="1" ItemsSource="{Binding Source={StaticResource SomeOtherItems}}" IsSynchronizedWithCurrentItem="False" SelectedItem="{Binding Path=SomeOtherValue, Mode=TwoWay}" DisplayMemberPath="Value" TabIndex="21"/> 
       <TextBox HorizontalContentAlignment="Stretch" Grid.Column="2" TabIndex="22" LostKeyboardFocus="TextBox_FormatAfterLostFocus"> 
        <TextBox.Text> 
         <Binding Path="Wert" Mode="TwoWay" /> 
        </TextBox.Text> 
       </TextBox> 

      </Grid> 
     </DataTemplate> 
    </ItemsControl.ItemTemplate> 
</ItemsControl> 

Merci à l'avance!

Answer 1

Voici un petit exemple. Je l'ai fait dans Silverlight, donc je suppose que vous devrez le modifier pour travailler dans WPF. Ce n'est pas complet, mais c'est un point de départ. Vous souhaiterez peut-être utiliser la propriété Tag de vos contrôles pour identifier ceux qui ont besoin d'une correction d'index de tabulation.

XAML:

<UserControl x:Class="SilverlightApplication6.MainPage" 
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      mc:Ignorable="d" 
      d:DesignWidth="640" 
      d:DesignHeight="480"> 
    <Grid x:Name="LayoutRoot"> 

     <StackPanel> 
      <ItemsControl ItemsSource="{Binding}" 
          Name="myItemsControl"> 
       <ItemsControl.ItemTemplate> 
        <DataTemplate> 
         <Grid> 
          <Grid.ColumnDefinitions> 
           <ColumnDefinition Width="3*" /> 
           <ColumnDefinition Width="*" /> 
           <ColumnDefinition Width="Auto" /> 
          </Grid.ColumnDefinitions> 

          <Grid.RowDefinitions> 
           <RowDefinition Height="Auto" /> 
          </Grid.RowDefinitions> 

          <ComboBox Grid.Column="0" 
             ItemsSource="{Binding Source={StaticResource SomeItems}}" 
             IsSynchronizedWithCurrentItem="False" 
             SelectedItem="{Binding Path=SomeValue, Mode=TwoWay}" 
             DisplayMemberPath="Name" 
             TabIndex="20" /> 
          <ComboBox Grid.Column="1" 
             ItemsSource="{Binding Source={StaticResource SomeOtherItems}}" 
             IsSynchronizedWithCurrentItem="False" 
             SelectedItem="{Binding Path=SomeOtherValue, Mode=TwoWay}" 
             DisplayMemberPath="Value" 
             TabIndex="21" /> 
          <TextBox HorizontalContentAlignment="Stretch" 
            Grid.Column="2" 
            TabIndex="22"> 
           <TextBox.Text> 
            <Binding Path="Wert" 
              Mode="TwoWay" /> 
           </TextBox.Text> 
          </TextBox> 

         </Grid> 
        </DataTemplate> 
       </ItemsControl.ItemTemplate> 
      </ItemsControl> 
      <Button Content="Fix Tab indexes" Click="Button_Click" 
        TabIndex="999" 
        ></Button> 
     </StackPanel> 
    </Grid> 
</UserControl> 

Et C#:

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Net; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Documents; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Animation; 
using System.Windows.Shapes; 
using System.Windows.Controls.Primitives; 

namespace SilverlightApplication6 
{ 
    public partial class MainPage : UserControl 
    { 
     public MainPage() 
     { 
      InitializeComponent(); 

      this.DataContext = new List<int>() { 1, 2, 3, 4, 5 }; 


     } 

     private void Button_Click(object sender, RoutedEventArgs e) 
     { 
      var controls = new List<Control>(); 
      GetChildrenOfSpecificType<Control>(this, ref controls, false); 

      var index = 1; 
      controls.ForEach(control => 
       { 
        if (control is ComboBox || control is TextBox) 
        { 
         control.TabIndex = index; 
         index++; 
        } 
       }); 
     } 

     private static void GetChildrenOfSpecificType<T>(DependencyObject parent, ref List<T> resultList, bool getSingle) where T : class 
     { 
      if (parent == null) 
       return; 
      else 
      { 
       int cnt = VisualTreeHelper.GetChildrenCount(parent); 

       if (cnt > 0) 
       { 
        for (int i = 0; i < cnt; i++) 
        { 
         var d = VisualTreeHelper.GetChild(parent, i); 
         if (d is T) 
         { 
          resultList.Add(d as T); 
          if (getSingle) 
           return; 
         } 

         GetChildrenOfSpecificType<T>(d, ref resultList, getSingle); 
        } 
       } 

      } 
     } 
    } 
}