TextBox not stretching horizontally - wpf

Question

I am unable to stretch the textbox horizontally fit its container.
NOTE:
I do set the HorizontalAlignment property.
I also tried binding the width of the textbox to its containers width.
Neither worked for me.
<ListView Grid.Row="1" Grid.Column="0" ItemsSource="{Binding ConsoleLines}" Background="Black" >
<ListView.ItemTemplate>
<DataTemplate>
<TextBox Text="{Binding ElementName=UserControl, Path=DataContext.Command, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
TextChanged="OnTextChanged" KeyDown="OnKeyDown"
HorizontalAlignment="Stretch" Padding="5" Background="Black" Foreground="LightGray" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>

Answer 1

Try setting the ListView.HorizontalContentAlignment Property to Stretch instead. From the linked page:
... you can set the HorizontalContentAlignment property to Stretch, which stretches the child element to fill the allocated space of the parent element
You must have misunderstood the answer, because it certainly does stretch each item across the entire width of the GridView. Try this:
<ListView Grid.Row="1" Grid.Column="0" ItemsSource="{Binding ConsoleLines}"
Background="Black" HorizontalContentAlignment="Stretch">
<ListView.ItemTemplate>
<DataTemplate>
<TextBox Text="Some simple text" Background="White"
Foreground="LightGray" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>

Answer 2

you should set the HorizontalContentAlignment="Stretch" of the ListView
<ListView ItemsSource="{Binding Collection, Source={StaticResource viewmodel}}" Background="Black" HorizontalContentAlignment="Stretch" >
<ListView.ItemTemplate>
<DataTemplate>
<TextBox HorizontalAlignment="Stretch" Padding="0" Background="Green" Foreground="White" Text="" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>