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Cannot populate XAML items in template control that in contained within another template control

Posted By:      Posted Date: September 10, 2010    Points: 0   Category :WPF
I have a template control Bookmark, and in MainWindow.xaml, this works just fine: <sdl:Bookmark> <sdl:Bookmark.Bookmarks> <sdl:BookmarkItem Name="test" Extent="-121.89,33.60,-117.09,36.32"> </sdl:BookmarkItem> </sdl:Bookmark.Bookmarks> </sdl:Bookmark> But, I also have a template control Titlebar which inside of its XAML contains a Bookmark control and in MainWindow.xaml, this does NOT work: <sdl:Titlebar x:Name="Titlebar"> <sdl:Titlebar.Bookmark> <sdl:Bookmark.Bookmarks> <!-- Doesn't like this --> <sdl:BookmarkItem Name="test" Extent="-121.89,33.60,-117.09,36.32"> </sdl:BookmarkItem> </sdl:Bookmark.Bookmarks> </sdl:Titlebar.Bookmark> </sdl:Titlebar> I get this error: Error 11 The tag 'Bookmark.Bookmarks' does not exist in XML namespace 'clr-namespace:SDL.ArcGIS.Client.Toolkit;assembly=SDL.ArcGIS.Client.Toolkit'. Line 45 Position 22. C:\Projects\SDL.ArcGIS.Client.Toolkit\SDL.ArcGIS.Client.Toolkit.WPFTestApplication\MainWindow.xaml 45 22 SDL.ArcGIS.Client.Toolkit.WPFTestApplication Bookmark does have a member property in the Titlebar class that is set to the template bookmark in OnApplyTemplate.  I tried making a dependency property for the Bookmark property too, but that didn't

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