XAML child window subclass: "InitializeComponent shadows member in base class." How can I resolve this warning without modifying autogenerated code?

Question

I have added two windows to a Silverlight 5 application project: FooWindowBase and SomeFooWindow. The latter is a sub-class of the former. Both contain a default constructor calling InitializeComponent, and apparently Visual Studio or the compiler autogenerates that method. This leads to the following compiler warning in the derived class SomeFooWindow that…

"sub InitializeComponent shadows an overloadable member declared in the base class FooWindowBase. If you want to overload the base method, this method must be declared Overloads."

Since InitializeComponent was autogenerated in both cases, there seems to be no way for me to add a Shadows over Overloads specifier.

Is there any way to prevent, or get rid of, this compiler warning without editing the autogenerated code?

---

FooWindowBase:

• XAML:

  <c:ChildWindow 
      x:Class="FooNamespace.FooWindowBase"
      xmlns:c="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"
      …>
    …
  </c:ChildWindow>
  

• Code:

  Imports System.Windows.Controls
  
  Partial MustInherit Class FooWindowBase : Inherits ChildWindow
      Public Sub New()
          InitializeComponent()
      End Sub
      …
  End Class
  

---

SomeFooWindow:

• XAML:

  <l:FooWindowBase
      x:Class="FooNamespace.SomeFooWindow"
      xmlns:l="clr-namespace:FooNamespace;assembly=Foo"
      …>
    …
  </l:FooWindowBase>
  

• Code:

  Partial Class SomeFooWindow : Inherits FooWindowBase
      Public Sub New()
          InitializeComponent()
      End Sub
      …
  End Class
  

Answer 1

I'll post the workaround I have ended up using for others who are facing the same problem.

One posted answer to this question asked on Code Project mentions that:

"Currently deriving a XAML generated class from another XAML generated class is not supported."

and the solution would be to:

"[…] define your base class all in code without using XAML."

The exact same words are mentioned on this Microsoft Knowledge Base article, btw. So basically, the compiler warning cannot be gotten rid of because that inheritance scenario I've posted simply isn't supported.

I ended up doing the following:

1. turned the derived class SomeFooWindow into a UserControl called SomeFooControl;
2. renamed FooWindowBase to FooWindow and removed the MustInherit modifier;
3. added a named ContentPresenter control to FooWindow;

4. instead of instantiating the previous SomeFooWindow, instantiated a FooWindow and set the ContentPresenter's content to an instance of a SomeFooControl:

   Dim someFooWindow = New FooWindow(…)
   someFooWindow.Content = New SomeFooControl(…)