How to Set focus on the 1st Item of Nested Listbox in Silverlight?

Question

Hi ,

I have a List box which contains another lisbox Inside it.

<ListBox x:Name="listBoxParent">
    <ListBox.ItemTemplate>

      <DataTemplate>


        <Image x:Name="thumbNailImagePath" Source="/this.jpg"  Style="{StaticResource ThumbNailPreview}" />                              
           <TextBlock Margin="5" Text="{Binding Smthing}" Style="{StaticResource TitleBlock_Artist}" />
           </StackPanel>
           <StackPanel Style="{StaticResource someStyle}" >
             <ListBox x:Name="listBoxChild" Loaded="listBoxChild_Loaded" BorderThickness="0">
               <ListBox.ItemTemplate>
                 <DataTemplate>
                   <StackPanel>
                     <TextBlock Margin="5" Text="{Binding myText}" Width="300"/>
                   </StackPanel>
                 </DataTemplate>
               </ListBox.ItemTemplate>
             </ListBox>
           </StackPanel>
         </DataTemplate>
        </ListBox.ItemTemplate>

      <ListBox.ItemsPanel>

      </ListBox.ItemsPanel>

</ListBox>

Now while I try to focus to the 1st item of the child List Box It focus repeteadly(as it get repeated inside parent Listbox) on 1st all the 1st items of parentlistbox, wish I could have provide a Screen shot for Better Understanding. But Can't

 public void listBoxChild_Loaded(object sender, RoutedEventArgs e)
        {
           var myListBox = (ListBox)sender;

           myListBox .ItemsSource = PageVariables.eOUTData;//listboxSongsData;
           myListBox .SelectedIndex = 0;
           myListBox .Focus();
        }

Thanks, Subhen

Answer 1

It's difficult to determine what you're trying to accomplish in your code.

One idea: Have you considered changing the inner ListBox to an ItemsControl? If you needed it to scroll as well, you could layer it in a ScrollViewer.

Second idea (possibly an additional idea): Every item that created in the item template is calling the Loaded event. Don't you want that to happen only once? Remove the event from the inner ListBox and set focus once the outer list has been loaded.