Handles ListBoxItem Selected events for the ListBoxItems in the inner ListBox.


   
  

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="300" Width="300">
    <StackPanel>
        <ListBox SelectionChanged="OuterListBox_SelectionChanged" Name="outerListBox">
            <ListBoxItem Content="Item 1" FontFamily="Tahoma" HorizontalContentAlignment="Left" />
            <ListBoxItem Content="Item 2" FontFamily="Algerian" FontSize="16" HorizontalContentAlignment="Center" />
            <ListBoxItem Content="Item 3" FontSize="20" HorizontalContentAlignment="Right" />
            <Button Content="Button directly in a list" Margin="5" />
            <ListBoxItem HorizontalContentAlignment="Center" Margin="5">
                <Button Content="Button wrapped in ListBoxItem" />
            </ListBoxItem>
            <ListBox Height="50" Margin="5">
                <ListBoxItem Content="Inner List Item 1" Selected="InnerListBoxItem_Selected" />
                <ListBoxItem Content="Inner List Item 2" Selected="InnerListBoxItem_Selected" />
                <ListBoxItem Content="Inner List Item 3" Selected="InnerListBoxItem_Selected" />
                <ListBoxItem Content="Inner List Item 4" Selected="InnerListBoxItem_Selected" />
            </ListBox>
            <StackPanel Margin="5" Orientation="Horizontal">
                <Label Content="Enter some text:" />
                <TextBox MinWidth="150" />
            </StackPanel>
        </ListBox>
        <TextBlock Text="No item currently selected." Margin="10" HorizontalAlignment="Center" Name="txtSelectedItem" />
    </StackPanel>
</Window>
//File:Window.xaml.cs
using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void InnerListBoxItem_Selected(object sender, RoutedEventArgs e)
        {
            ListBoxItem item = e.OriginalSource as ListBoxItem;

            if (item != null)
            {
                MessageBox.Show(item.Content + " was selected.", Title);
            }
        }

        private void OuterListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            object item = outerListBox.SelectedItem;

            if (item == null)
            {
                txtSelectedItem.Text = "No item currently selected.";
            }
            else
            {
                txtSelectedItem.Text = item.ToString();
            }
        }
    }
}