title: Can't create xmlns reference to other project in XAML
body: <p>I have a WPF project defined like this:</p>
  
  <pre>
  MyApp.sln
    MyAppWPF
    MyApp.Domain
  </pre>
  
  <p>In one of my xaml files in the MyAppWPF project I'm trying to reference a class defined in MyApp.Domain project.  I have a <strong>project reference</strong> in MyAppWPF to MyApp.Domain.  I am trying to create the reference like this:</p>
  
  <pre>
  &lt;Window x:Class="MyAppWPF.Window1"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="clr-namespace:MyApp.Domain;assembly=MyApp.Domain"
      Title="Window1" Height="305" Width="485">
      &lt;Window.Resources>
         &lt;local:MyClass x:Key="mine" />
      &lt;/Window.Resources>
  &lt;/Window&gt;
  </pre>
  
  <p>I get an error saying the assembly cannot be found, however I can create an instance of the class I want to reference in the code behind, so I know I've got it referenced correctly.</p>
  
  <p>How do I do this?  Do I need a strong name, or reference the dll directly instead of using a project reference?</p>