Silverlight complex binding - silverlight

Question

I've the page:
<view:PhoneApplicationPageBase
x:Class="Exadel.CCHMobile.View.NewsView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:view="clr-namespace:Exadel.CCHMobile.View"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
mc:Ignorable="d" Height="768" Width="480"
shell:SystemTray.IsVisible="True">
<view:PhoneApplicationPageBase.DataContext>
<Binding Path="News" Source="{StaticResource Locator}" />
</view:PhoneApplicationPageBase.DataContext>
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel Grid.Row="0">
<TextBlock Text="{Binding Path=TrackerTitle}" Style="{StaticResource PhoneTextNormalStyle}"/>
</StackPanel>
<ListBox Grid.Row="1" ItemsSource="{Binding Path=News}" VerticalAlignment="Stretch">
<DataTemplate>
<TextBlock Grid.Row="0" Grid.Column="0" Text="{Binding Title}"/>
</DataTemplate>
</ListBox>
</Grid>
</view:PhoneApplicationPageBase>
My Model has property TrackerTitle, is binds ok. I have a News collection also in the model. I can't bind the Title property of News entity to the TextBlock. What is wrong?
Thank you.

Answer 1

Here
<ListBox Grid.Row="1" ItemsSource="{Binding Path=News}" VerticalAlignment="Stretch">
<DataTemplate>
<TextBlock Grid.Row="0" Grid.Column="0" Text="{Binding Title}"/>
</DataTemplate>
</ListBox>
The DataTemplate is hanging in the mid-air. It should be inside ItemTemplate.
Also, is your collection ObservableCollection? or does it subscribes Property change notification ?