How to wrap ListPicker SelectedItem in windows phone 8 - windows-phone-7

Question

I am using ListPicker from windows phone toolkit. My options are pretty lengthy so my ItemTemplate is,
<DataTemplate>
<TextBlock TextWrapping="Wrap"/>
</DataTemplate>
Now, when I select a lengthy option(say three lines) in Expansion Mode (less then 5 options) it is working good as expected, but when I Use FullMode(more than 5 items) it is not wrapped in the ListPicker.
To be more clear, It is wrapped as expected in the FullModePage but it is not within the control.
<toolkit:ListPicker Margin="0" MinHeight="70" toolkit:TiltEffect.SuppressTilt="True" Template="{StaticResource ListPickerControlCustomTemplate}" HorizontalAlignment="Stretch" VerticalAlignment="Top" FontFamily="{StaticResource RegularFont}"
SelectionChanged="SharedAppsCategoryListPicker_OnSelectionChanged" Name="SharedAppsCategoryListPicker"
LayoutUpdated="SharedAppsCategoryListPicker_OnLayoutUpdated" >
<toolkit:ListPicker.ItemTemplate>
<DataTemplate>
<Grid Margin="0,0,20,0">
<TextBlock TextWrapping="Wrap" VerticalAlignment="Center" HorizontalAlignment="Stretch" Margin="20,15,120,15" FontSize="20" Text="{Binding groupname}" Foreground="{StaticResource ListPickerForegroundColor}"></TextBlock>
<Rectangle Margin="20,10,0,-11" Height="0.5" HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Stroke="{StaticResource ListPickerDividerColor}" StrokeThickness="0.5" />
</Grid>
</DataTemplate>
</toolkit:ListPicker.ItemTemplate>
<toolkit:ListPicker.FullModeItemTemplate>
<DataTemplate>
<Grid Margin="0,0,20,0">
<TextBlock MaxWidth="250" Width="250" TextWrapping="Wrap" FontSize="20" Margin="0,0,120,0" VerticalAlignment="Center" Text="{Binding groupname}" Foreground="{StaticResource ListPickerForegroundColor}" FontFamily="{StaticResource RegularFont}"></TextBlock>
</Grid>
</DataTemplate>
</toolkit:ListPicker.FullModeItemTemplate>
</toolkit:ListPicker>

Answer 1

you would be needed to give width for the Textblock after then Text Would be Wrapped if content is larger than the width of the Textblock.
try this :
<DataTemplate>
<TextBlock TextWrapping="Wrap" width=200/>
</DataTemplate>
Edit:
I have Implemeted it this way
XAML:
<toolkit:ListPicker Margin="0" MinHeight="70" toolkit:TiltEffect.SuppressTilt="True" HorizontalAlignment="Stretch" VerticalAlignment="Top" Name="SharedAppsCategoryListPicker" >
<toolkit:ListPicker.ItemTemplate>
<DataTemplate>
<Grid Margin="0,0,20,0">
<TextBlock Width="300" TextWrapping="Wrap" VerticalAlignment="Center" HorizontalAlignment="Stretch" Margin="20,15,120,15" FontSize="20" Text="{Binding}" ></TextBlock>
</Grid>
</DataTemplate>
</toolkit:ListPicker.ItemTemplate>
<toolkit:ListPicker.FullModeItemTemplate>
<DataTemplate>
<Grid Margin="0,0,20,0">
<TextBlock Width="400" TextWrapping="Wrap" FontSize="20" Margin="0,0,0,0" VerticalAlignment="Center" Text="{Binding}" ></TextBlock>
</Grid>
</DataTemplate>
</toolkit:ListPicker.FullModeItemTemplate>
</toolkit:ListPicker>
Images of O/P: