Listbox selectionchange event problem

Question

Hi ,

 

I wan to learn something

 

This is my xaml page code.

<ListBox x:Name="listBox" HorizontalAlignment="Left" Height="227" Margin="10,25,0,0" VerticalAlignment="Top" Width="184" SelectionChanged="listBox_SelectionChanged">

<ListBox.ItemTemplate>

<DataTemplate>

<TextBlock Text="{Binding Name}"/>

</DataTemplate>

</ListBox.ItemTemplate>

</ListBox>

then C# code is

 

List<Product> products = new List<Product>();

products.Add(new Product() { Id = 1, Name = "Test" });

products.Add(new Product() { Id = 1, Name = "Test" });

products.Add(new Product() { Id = 1, Name = "Test" });

products.Add(new Product() { Id = 1, Name = "Test" });

listBox.ItemsSource = products;

 

 

I want to selectionchange event but always get null data  can you help me ?