ItemsControl with SharedSizeGroup AND stretching

Question

Apparently when using a SharedSizeGroup, you can't use star sizing (*). This has been discussed here: Grid's SharedSizeGroup and * sizing

Unfortunately, in that discussion they don't really offer a viable solution to the problem.

I would like to display a list of controls, one control per row, with the following layout:

(Name)(Entry textbox)(X Button)

It should look like this:

Description [                     ] X
Name        [                     ] X
ID          [                     ] X

But instead I'm getting

Description [] X
Name        [] X
ID          [] X

Column 1 should be as wide as the longest word. Column 2, the entry textbox, should stretch to fill all the remaining space (*), but that doesn't work with SharedSizeGroup as previously discussed. The * is being treated as Auto, hence the non-stretching.

Any ideas? Here's the XAML:

        <ItemsControl ItemsSource="{Binding FilterList}" Margin="5,0,5,0" Grid.IsSharedSizeScope="True">
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <Grid Margin="5,0,5,0" HorizontalAlignment="Left">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition SharedSizeGroup="Column0" Width="Auto"/>
                            <ColumnDefinition SharedSizeGroup="Column1" Width="*"/>
                            <ColumnDefinition SharedSizeGroup="Column2" Width="Auto"/>
                        </Grid.ColumnDefinitions>
                        <Label Grid.Column="0" Content="{Binding FilterLabel}" HorizontalAlignment="Right"/>
                        <TextBox Grid.Column="1" Height="20" Text="{Binding FilterString, UpdateSourceTrigger=PropertyChanged}"/>
                        <Button Grid.Column="2" Content=" X " Margin="2" Visibility="{Binding ClearFilterVis}" Command="{Binding ClearFilterCommand}"/>
                    </Grid>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
        </ItemsControl>

Answer 1

That's because you set Grid's HorizontalAlignment to Left instead of Stretch. Or just remove Grid's HorizontalAlignment setting. And as @Highcore said, you don't seems to need SharedSizeGroup in this case.