WPF ListBox ItemTemplate: How to make contents fill available space?

Question

I have set my ListBox.ItemTemplate to something like below

<ListBox.ItemTemplate>
    <DataTemplate>
        <StackPanel Margin="10">
            <TextBlock Text="{Binding Args}" />
            <ProgressBar Value="{Binding Progress}" Height="10" />
            <TextBlock Text="{Binding Status}" />
            <TextBlock Text="{Binding Result}" />
        </StackPanel>
    </DataTemplate>
</ListBox.ItemTemplate>

The result is

How can I make the StackPanel fill the entire width of the ListBox ?

Answer 1

在我的头顶，将Listbox的Horizo​​ntalContentAlignment属性设置为Stretch。