UWP ListView items not filling ListView's Width - xaml

Question

I have a ListView with a set width of 1000 and I would like the items to expand to fill this width if their width is set to 1000 or more.
All answers I have found yet suggest this
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Center"/>
</Style>
</ListView.ItemContainerStyle>
which is failing to do anything.
Here's the ListView code.
<ListView Width="1000" Background="Violet">
<ListView.ItemTemplate>
<DataTemplate>
<Grid Width="1000" Background="Black" HorizontalAlignment="Center">
<TextBlock Text="{Binding}"/>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Center"/>
</Style>
</ListView.ItemContainerStyle>
<ListView.Items>
<x:String>ITEM1</x:String>
<x:String>ITEM2</x:String>
</ListView.Items>
</ListView>
I tried ListBox and this behavior is present there as well. Apparently, the items can fill the original width minus 24 so, if I set my item's width to 976, it perfectly fills the container. Anymore and it gets hidden behind the container.
Thanks.

Answer 1

The problem is that the ListViewItem container has a padding, which is 12 epx from all sides. To remove it, set the property to 0 as well:
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="Padding" Value="0" />
</Style>
</ListView.ItemContainerStyle>