ListViewItem won't stretch to the width of a ListView - windows-8

Question

I'm currently designing a windows 8 store app using XAML but I have a minor sizing issue. I have a ListView with a DataTemple.
The code for my ListView & DataTemplate are below:
<ListView x:Name="listPageItems"
Grid.Row="1"
SelectionMode="Extended"
IsSwipeEnabled="False"
ItemsSource="{Binding Mode=OneWay, Source={StaticResource items}}"
ItemTemplate="{StaticResource NavigationItemTemplate}"
ScrollViewer.VerticalScrollBarVisibility="Visible">
</ListView>
<DataTemplate x:Key="NavigationItemTemplate">
<Grid Height="75">
<Grid.RowDefinitions>
<RowDefinition Height="1.6*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Rectangle Fill="White" />
<Rectangle Fill="{StaticResource SSEGreenBrush}"
Grid.Row="1" />
<Border BorderThickness="2"
BorderBrush="{StaticResource SSEGreenBrush}"
Grid.RowSpan="2" />
<TextBlock x:Name="textTitle"
Text="{Binding ClientName}"
Style="{StaticResource TitleTextStyle}"
Foreground="{StaticResource SSEBlueBrush}"
Margin="10,5,5,5" />
<StackPanel Orientation="Horizontal"
Grid.Row="1"
HorizontalAlignment="Stretch">
<TextBlock Text="Last Edit :"
Style="{StaticResource SubtitleTextStyle}"
Foreground="{StaticResource SSEBlueBrush}"
Margin="3,0,0,3"
VerticalAlignment="Center" />
<TextBlock Text="SurveyDate"
Style="{StaticResource SubtitleTextStyle}"
Foreground="{StaticResource SSEBlueBrush}"
Margin="3,0,0,3"
VerticalAlignment="Center" />
</StackPanel>
</Grid>
</DataTemplate>
The listview is within a grid column with a fixed width of 240.
When the view is displayed the ListViewItems don't stretch to the width of the ListView. I've tried setting numerous properties including the HorizontalContentAlignment but I can't seem to get the ListViewItem to stretch!
Can anybody help?
I'm using Visual studio 2012, C# 4.5 and developing a Windows store app.

Answer 1

Try adding the following to your ListView definition
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
</Style>
</ListView.ItemContainerStyle>

Answer 2

The easiest thing to do is just adding HorizontalContentAlignment="Stretch" to the ListView. There normally is no need for anything more.