Strech ListBox and ListBoxItems in UWP - xaml

Question

I want to strech a ListBox with its ListBoxItem. Streching the ListBox itself isn't a problem. The problem seems to be, to tell the ListBoxItem to use the available space in the ListBox.
<Page.Content>
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" Height="200">
<ListBox VerticalContentAlignment="Stretch" VerticalAlignment="Stretch" Background="Green" ItemsSource="{x:Bind Path=ChessFieldList}" >
<ListBox.ItemTemplate>
<DataTemplate >
<StackPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="Yellow" BorderBrush="Red" BorderThickness="3" >
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</Page.Content>
The image below shows the above and expected result.
How can I achieve the expected result?
[Edit] An other and in my opinion the correct solution: Set Width and Height of ItemsControl Children

Answer 1

This is a common problem. All you need to do is set the HorizontalContentAlignment of the ListBoxItems too:
<ListBox Background="Green" ItemsSource="{x:Bind ChessFieldList}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Background="Yellow" BorderBrush="Red" BorderThickness="3" Height="50">
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
Since the StackPanel doesn't contain any content, it won't have any height, so I've just added Height="50" to it for the purpose of this demonstration.

Answer 2

Simply add
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
If you use grouping, you should include:
<ListView.GroupStyle>
<GroupStyle HidesIfEmpty="False">
<GroupStyle.HeaderContainerStyle>
<Style TargetType="ListViewHeaderItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<Setter Property="VerticalContentAlignment" Value="Stretch" />
</Style>
</GroupStyle.HeaderContainerStyle>
</GroupStyle>
</ListView.GroupStyle>
It's a bit more than you asked for, but it's a little-known technique.