如何使用DataTemplate訪問列表框中的特定項目

Question

我正在使用Telerik，HubSection就像使用WP8的Pivot一樣。

<HubSection x:Uid="Section4Header" Header="All note" > 
    <DataTemplate> 
     <ListBox x:Name="listBoxobj" Background="Transparent" Margin="6" Height="auto" BorderThickness="2" MaxHeight="580" Grid.Row="1" SelectionChanged="listBoxobj_SelectionChanged"> 
      <ListBox.ItemTemplate> 
       <DataTemplate> 
        <Grid Width="350" > 
         <Border Margin="5" BorderBrush="White" BorderThickness="1"> 
          <Grid Holding="Grid_Holding" VerticalAlignment="Stretch"> 
           <Grid.RowDefinitions> 
            <RowDefinition Height="Auto"/> 
            <RowDefinition Height="Auto"/> 
           </Grid.RowDefinitions> 

           <FlyoutBase.AttachedFlyout> 
            <MenuFlyout> 
             <MenuFlyoutItem x:Name="EditButton" 
              Text="Export To PDF" 
              Click="EditButton_Click" 
             /> 
             <MenuFlyoutItem x:Name="EditButton1" 
              Text="Export To PDF syncfu" 
              Click="EditButton1_Click" 
             /> 
            </MenuFlyout> 
           </FlyoutBase.AttachedFlyout> 
           <TextBlock Margin="5,0,0,0" Grid.Row="0" x:Name="NameTxt" TextWrapping="Wrap" Text="{Binding Name}" FontSize="28" Foreground="White"/> 
           <TextBlock HorizontalAlignment="Right" Margin="0,0,35,0" Grid.Row="3" x:Name="CreateddateTxt" Foreground="White" FontSize="18" TextWrapping="Wrap" Text="{Binding CreationDate}" /> 
          </Grid> 
         </Border> 
        </Grid> 
       </DataTemplate> 
      </ListBox.ItemTemplate> 
     </ListBox> 
    </DataTemplate> 
</HubSection> 

C＃

private void ReadWritePadFileContentList_Loaded(object sender, RoutedEventArgs e) 
{ 
    ReadAllWritePadFileContent dbnote = new ReadAllWritePadFileContent(); 
    DB_ContactList = dbnote.GetAllContacts();//Get all DB contacts 
    if (DB_ContactList.Count > 0) 
     deleteAppBarButton.IsEnabled = true; 
    else 
     deleteAppBarButton.IsEnabled = false; 

    listBoxobj.ItemsSource = DB_ContactList.OrderByDescending(i => i.Id).ToList();//Binding DB data to LISTBOX and Latest contact ID can Display first. 

} 

listBoxobj是列表框 問題的名字就是那麼，如何可以存取權限的列表框？

「listBoxobj」這個名字不會在目前情況下

Answer 1

正如邁克說，你不會成爲能夠直接從輪轂的代碼中訪問列表框中，作爲它在一個DataTemplate中。

但是，你可以創建一個UserControl例如MyUserControl1。 將您的ListBox放入MyUserControl1.xaml文件中，並將其相關的c＃代碼放在MyUserControl1.cs文件中。 然後，將用戶控件添加到HubSection中。

<HubSection x:Uid="Section4Header" Header="All note" > 
    <DataTemplate> 
     <local:MyUserControl1 x:Name="ListControl"/> 
    </DataTemplate> 
</HubSection> 

編輯：把你的列表框代碼<Grid>你的用戶控件代碼中：

<ListBox x:Name="listBoxobj" Background="Transparent" Margin="6" Height="auto" BorderThickness="2" MaxHeight="580" Grid.Row="1" SelectionChanged="listBoxobj_SelectionChanged"> 
     <ListBox.ItemTemplate> 
      <DataTemplate> 
       <Grid Width="350" > 
        <Border Margin="5" BorderBrush="White" BorderThickness="1"> 
         <Grid Holding="Grid_Holding" VerticalAlignment="Stretch"> 
          <Grid.RowDefinitions> 
           <RowDefinition Height="Auto"/> 
           <RowDefinition Height="Auto"/> 
          </Grid.RowDefinitions> 

          <FlyoutBase.AttachedFlyout> 
           <MenuFlyout> 
            <MenuFlyoutItem x:Name="EditButton" 
             Text="Export To PDF" 
             Click="EditButton_Click" 
            /> 
            <MenuFlyoutItem x:Name="EditButton1" 
             Text="Export To PDF syncfu" 
             Click="EditButton1_Click" 
            /> 
           </MenuFlyout> 
          </FlyoutBase.AttachedFlyout> 
          <TextBlock Margin="5,0,0,0" Grid.Row="0" x:Name="NameTxt" TextWrapping="Wrap" Text="{Binding Name}" FontSize="28" Foreground="White"/> 
          <TextBlock HorizontalAlignment="Right" Margin="0,0,35,0" Grid.Row="3" x:Name="CreateddateTxt" Foreground="White" FontSize="18" TextWrapping="Wrap" Text="{Binding CreationDate}" /> 
         </Grid> 
        </Border> 
       </Grid> 
      </DataTemplate> 
     </ListBox.ItemTemplate> 
    </ListBox> 

Answer 2

存在，您將無法做到這一點直接，因爲它是一個DataTemplate內，因此您的列表框在運行時產生的。

您可能必須按照本文中的步驟來拉你的列表框出來的視覺樹的有些欣喜： http://blogs.msdn.com/b/wpfsdk/archive/2007/04/16/how-do-i-programmatically-interact-with-template-generated-elements-part-ii.aspx