title: Why I cannot step into WPF source code in VS?
body: <p>I'm using VS 2013 with .NET 4.0, and have configured Debug settings as <a href="http://referencesource.microsoft.com/" rel="nofollow">http://referencesource.microsoft.com/</a>. I can step into some core libraries like <code>List&lt;T&gt;</code> but still cannot step into WPF code. VS shows "Source Not Available" for WPF components.</p>
  
  <p>Does Microsoft provide the symbols and source code for WPF through its public symbol server?</p>