Windows Phone 7 - dynamic items for a ListBox - windows-phone-7

Question

I want to create the content of the each item inside a ListBox dynamically - think of it as a list of items. Or think of a phone book application with contacts and each contact has one or more phone numbers that are displayed beneath the name; the name is one field, the phone numbers is a second field. But the content of the phone number field would obviously depend on the number of phone number the contact has.
Like:
Andrew Adams <-- TextBlock for name
650-123-2222 <-- "Item" for numbers
490-222-3333
Benny Benjamin
650-123-3333
I have tried to solve this by creating a second ListBox for the numbers item inside the main ListBox item. But I don't know how I can populate this second ListBox with a model from C#.
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<StackPanel Height="Auto" Width="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" >
<ListBox Name="ContactResultsData" ItemsSource="{Binding Contacts}" Margin="24,0" Height="620">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Name="ContactName" Text="{Binding ContactName}" Style="{StaticResource PhoneTextLargeStyle}" />
<ListBox Name="NumbersList" ItemsSource="{Binding NumbersList}">
<TextBlock Name="Number" Text="{Binding Number}" Style="{StaticResource PhoneTextSmallStyle}" />
</ListBox>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Grid>
</Grid>
Question would be: How can I set NumbersList ItemsSource from C#? Or can I solve my problem with some other better approach?

Answer 1

You need to set the ItemTemplate for your second ListBox. It should look like:
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<StackPanel Height="Auto" Width="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" >
<ListBox Name="ContactResultsData" ItemsSource="{Binding Contacts}" Margin="24,0" Height="620">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Name="ContactName" Text="{Binding ContactName}" Style="{StaticResource PhoneTextLargeStyle}" />
<ListBox Name="NumbersList" ItemsSource="{Binding NumbersList}">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Name="Number" Text="{Binding Number}" Style="{StaticResource PhoneTextSmallStyle}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Grid>
On a side note, don't give your UI elements name (Name or x:Name) unless you need to use them in code behind or from xaml. This is especially true for items within an ItemTemplate.

Answer 2

The inner can't directly contain a
If NumbersList is an IList or similar, then you can't bind to "Number" - simply use {Binding} instead