Aligning WrapPanel with same Spacing Size

Question

I'm trying to align my WrapPanel to have the same spacing size, although I can't figure out how. Here's an example of what I want,

XAML Code:

        <ListBox Grid.Row="1" ItemsSource="{Binding HolidayGenerator}" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
        <ListBox.ItemsPanel>
            <ItemsPanelTemplate>
                <toolkit:WrapPanel Orientation="Horizontal"/>
            </ItemsPanelTemplate>
        </ListBox.ItemsPanel>
        <ListBox.ItemTemplate>
            <DataTemplate>
                <CheckBox Content="{Binding Name}" IsChecked="{Binding IsSelected, Mode=TwoWay}" HorizontalAlignment="Right" />
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>

Any help is greatly apperciated.

Answer 1

I can't be sure that this will work, but I'm thinking that you may be able to coerce the vertical alignment of each column by setting the ItemWidth property on the WrapPanel (using a value that is appropriate based on the column width that you want it to render with):

<ItemsPanelTemplate>
    <toolkit:WrapPanel Orientation="Horizontal" ItemWidth="25" />
</ItemsPanelTemplate>