How to use CollectionContainer as ItemsSource?

Question

Hello,

I have a small code sample that works fine

<ContextMenu ItemsSource="{BindingPath=AvailableViews}">

AvailableViews is an ObservableCollection.

If I like to extend it in the following way it dosn't work, the contextMenue appears empty:

<ContextMenu>
  <ContextMenu.ItemsSource>
    <CompositeCollection>
      <CollectionContainer Collection="{Binding Path=AvailableViews}" />
    </CompositeCollection>
  </ContextMenu.ItemsSource>
</ContextMenu>

My question is: Why doesn't work the second code snippet?

Roy

Answer 1

I see in

http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/b15cbd9d-95aa-47c6-8068-7ae9f7dca88a

it is a bug.

Roy

Answer 2

Hi RMxxx,

Thank you for this feedback, I will continue to consult internal for this issue. On the other hand, we have a workaround:

  <Window.Resources>
    <CollectionViewSource x:Key="source" Source="{Binding AvailableViews}"/>
  </Window.Resources>
  <Grid Background="Red">
    <Grid.ContextMenu>
      <!--<ContextMenu ItemsSource="{Binding Path=AvailableViews}"/>-->
      <ContextMenu>
        <ContextMenu.ItemsSource>
          <CompositeCollection>
            <CollectionContainer Collection="{Binding Source={StaticResource source}}" />
          </CompositeCollection>
        </ContextMenu.ItemsSource>
      </ContextMenu>
    </Grid.ContextMenu>
  </Grid>

 

Please check it out.

 

Sincerely,

---

Bob Bao [MSFT]
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