Why can't I call Delegate.CreateDelegate in my Portable Class Library?

Question

I have the following problem: I want to call Delegate.CreateDelegate from within my Portable Class Library targeting .NET 4.5, Windows Phone 8 and Windows 8 Sto

Answer 1

OK, after a night of sleeping I recognized that my question actually should be "How do I dynamically create delegates in the new API introduced with the Windows Runtime?". As Rafael indicated in the comments of my question, different APIs are provided when Windows 8 / Phone 8 is targeted in addition to .NET. If Silverlight is also targeted, then APIs that are not available in Windows 8 / Phone 8 will be mapped and this explains why I can suddenly call Delegate.CreateDelegate when I add Silverlight as a target of the Portable Class Library. In .NET, the new APIs for Reflection were introduced with .NET 4.5.

Anyway, to create a delegate in Windows 8 / Windows Phone 8, one has to use the MethodInfo.CreateDelegate method, just like this:

public class MyClass
{
    public void MyMethod(EventHandler handler)
    {
        var methodInfo = handler.GetMethodInfo();
        var @delegate = methodInfo.CreateDelegate(typeof(OpenEventHandler), null);
    }
}

public delegate void OpenEventHandler(T target, object sender, EventArgs arguments);