wp7修改Panorama title的字体大小

可以自定义Titile的模板，具体XAML如下：

<!--Panorama control-->
<controls:Panorama Title="my application">
<controls:Panorama.Background>
<ImageBrush ImageSource="PanoramaBackground.png"/>
</controls:Panorama.Background>

<!--加入自定义标题字体-->
<controls:Panorama.TitleTemplate>
<DataTemplate>
<TextBlock Text="My Title" FontSize="100" Margin="0,50,0,0" FontFamily="Lucida Sans Unicode" />
</DataTemplate>
</controls:Panorama.TitleTemplate>

<!--Panorama item one-->
<controls:PanoramaItem Header="first item">
<!--Double line list with text wrapping-->
<ListBox Margin="0,0,-12,0" ItemsSource="{Binding Items}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,0,0,17" Width="432" Height="78">
<TextBlock Text="{Binding LineOne}" TextWrapping="Wrap" Style="{StaticResource PhoneTextExtraLargeStyle}"/>
<TextBlock Text="{Binding LineTwo}" TextWrapping="Wrap" Margin="12,-6,12,0" Style="{StaticResource PhoneTextSubtleStyle}"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</controls:PanoramaItem>