Silverlight relativebinding ItemTemplate ListboxItem - Listbox

Question

I created programatically a class (I called it ViewGrid) so that I use an instance of it as ItemTemplate for my ListBox control; of course, it's my data template for the listboxitem....

Also, in my ViewGrid class, I got a dependency property called IsChecked and I want to keep it in sync with the ListBoxItem's IsSelected property. I noticed that in SL there no relativesource-findancestor-ancestortype support for binding as in WPF, still, I need to find a way to keep my IsChecked property synchronized with the IsSelected property of the internally generated ListBoxItem for my ListBox control. Can you help?

Answer 1

Here is a ListBox defined in XAML that uses the IsSelected property of each LitBoxItem to show or hide a button when selected. You just need to duplicate that Binding approach for the ListBoxItems you create in code. Either that, or create a UserControl with the appropriate ListBoxItem XAML, and insert instances of those UserControls into your ListBox.

<ListBox>
    <ListBox.ItemTemplate>
        <DataTemplate>
            <Grid Width="200" Height="120">
                <StackPanel Margin="5">
                    <TextBlock Text="{Binding Name, Mode=OneWay}" />
                    <StackPanel Visibility="{Binding IsSelected, Mode=OneWay, Converter={StaticResource BoolToVisible}}">
                        <Button Content="Show Details" Click="OnDetailsClick" Tag="{Binding}" />
                    </StackPanel>
                </StackPanel>
            </Grid>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>