"Xaml Parsing Failed" in the Windows Store User Management app

Question

I need to skip something simple / fundamental that I was not able to reference the Windows Store application class library / Windows Runtime component in my Windows Store application project.

I stripped everything to the state of bare bones. This is what I have:

User Management Project (DummyItem.xaml):

<UserControl ...> <Grid Background="Red"> </Grid> </UserControl> 

My applications for the Windows Store MainPage.xaml:

 <Page ... xmlns:c="using:Midas.UI.Cards"> <Canvas Background="{StaticResource ApplicationPageBackgroundThemeBrush}"> <c:DummyItem Width="150" Height="100"></c:DummyItem> </Canvas> </Page> 

I can create a project, but after starting it says: "XAML Parsing Failed". I can’t see the control in the MainPage.xaml constructor, it says: “Unable to instantiate DummyItem”.

I ran into this problem since Visual Studio 11 RC, and had to release my applications with all the user control code replicated in the Windows Store Apps project itself for it to work. Can any soul point me in the right direction? Thanks!

Answer 1

This is a known issue in Visual Studio 2012. The issue occurs if the assembly name contains a period. See: http://social.msdn.microsoft.com/Forums/en-US/winappswithcsharp/thread/fa2d8d53-254c-4d4a-b39a-110fde0d6c80