How to get the actual property name when referencing an interface?

Consider the following case:

Public Interface IHasDateUpdated
     Property DateUpdated As DateTime
End Interface

Public Class MyClass
     Implements IHasDateUpdated

     Public Property MyDateUpdated As DateTime Implements IHasDateUpdated.DateUpdated
End Class

Now, assuming I was referencing an instance of MyClass as an IHasDateUpdated; how would I determine the actual name of t开发者_开发问答he property that implements the interface property via reflection?

For example:

Dim x As IHasDateUpdated = New MyClass()
' How do I derive "MyDateUpdated" from "x" using x.DateUpdated?

Sorry flor the c# answer but you should be able to translate this I'm suer :)

InterfaceMapping im = y.GetInterfaceMap(typeof(IHasDateUpdated ));
        foreach (MethodInfo info in im.TargetMethods)
        {
            if (info.IsPrivate)
                MessageBox.Show(info.Name + " is private");
        }
        MessageBox.Show(y.FullName);