Binding Listbox in windows phone - wpf

Question

I have 2 textblocks in a listbox datatemplate.
I want to display list of names in alphabetical order. The first textblock should show the first character of names only at the start of the string with that character and the second textblock should show the string.
Please check the below link
http://i.stack.imgur.com/4mdtu.png
It is like:
A Ana
Andrew
Andy
B Bane
Bob
C Chris
Christian
Catherine
I tried this:
XAML:
<ListBox Height="331" Name="lstBoxPlayers" MinHeight="200" MinWidth="150" Margin="0,0,0,20" SelectionChanged="lstBoxPlayers_SelectionChanged"
Tap="lstBoxPlayers_Tap" >
<ListBox.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Black" BorderThickness="0,0,0,1" MinWidth="200" Margin="0,0,0,0" Grid.Column="0">
<Grid Background="White" MinWidth="200" Height="50">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock x:Name="Abrev" Text="{Binding Path=PlayerShortName[0]}" FontSize="30" Foreground="Black" Height="Auto" Width="26" TextAlignment="Center">
</TextBlock>
<TextBlock Grid.Column="1" Text="{Binding PlayerShortName}" Foreground="Black" FontSize="16" Height="29" MaxWidth="160" Margin="-25,0,0,0" TextAlignment="Center">
</TextBlock>
</Grid>
</Border>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
code behind:
lstBoxPlayers.ItemsSource = PlayerList; //List of string

Answer 1

You can use GroupBy to form Alphabetic groups and then bind the resultant Collection of groups to the ListBox..
The code behind would look like:
lstBoxPlayers.ItemsSource = PlayerList.GroupBy( p => p.PlayerShortName[ 0 ] );
And the Xaml in you Grid would look like:
<!--Key of the Group-->
<TextBlock x:Name="Abrev" Text="{Binding Path=Key}" FontSize="30" Foreground="Black" Height="Auto" Width="26" TextAlignment="Center" VerticalAlignment="Top"></TextBlock>
<!--Values of the Group-->
<ItemsControl Grid.Column="1" ItemsSource="{Binding}" Margin="-25,0,0,0" >
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBlock Grid.Column="1" Text="{Binding PlayerShortName}" Foreground="Black" FontSize="16" Height="29" MaxWidth="160" TextAlignment="Center"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>