Border Control in Windows Phone 7, Auto Height & Width not right - xaml

Question

I have a ListBox with this template in it.
<phone:PhoneApplicationPage.Resources>
<DataTemplate x:Key="Template">
<StackPanel Margin="0,10">
<Border BorderBrush="Black" BorderThickness="1" Background="#FFFFC000" Width="460" MinHeight="76">
<StackPanel Margin="4,4,-4,-153">
<TextBlock Text="{Binding }" HorizontalAlignment="Center" VerticalAlignment="Top" Foreground="Black" TextWrapping="Wrap"/>
<TextBlock " Text="{Binding Mode=OneWay}" HorizontalAlignment="Center" VerticalAlignment="Top" Foreground="Black" TextWrapping="Wrap"/>
</StackPanel>
</Border>
</StackPanel>
</DataTemplate>
</phone:PhoneApplicationPage.Resources>
Yet I have to force set a Width and Height on the Border otherwise it makes like Width and Height of "2".
It is like it does not understand I have 2 TextBlock inside it and won't expand to fill both of them.
This leaves me with having to put a fixed height and width in what I don't like as if the text is too big it gets cutoff.

Answer 1

You can toss out your StackPanel's because you don't need them, they're also what's keeping your wrapping from working, you need a panel like a Grid for that. The negative Margin's also isn't something you'd normally see in a DataTemplate for a ListBox so I'd guess you have some other funky layout stuff going on from that sort of practice elsewhere up the tree.
<phone:PhoneApplicationPage.Resources>
<DataTemplate x:Key="Template">
<Grid Margin="0,10">
<Border BorderBrush="Black" BorderThickness="1" Background="#FFFFC000"/>
<TextBlock TextWrapping="Wrap"
HorizontalAlignment="Center" Margin="4,4,-4,-153">
<Run Text="{Binding }"/><LineBreak/>
<Run Text="{Binding Mode=OneWay}"/>
</TextBlock>
</Grid>
</DataTemplate>
</phone:PhoneApplicationPage.Resources>
So unless I'm missing something somewhere this should fix you up as the Grid will handle the sizes of its children for you and consume the space necessary in its parent. However if there's something else in your structure pushing stuff around and won't let it consume that space it should invoke your Wrapping.
Hope this helps :)