cant overload the dispose method of a picturebox

I have a class which inherits from PictureBox. I want to overload the Dispose sub, but I can't.

VB Code:

Public Overloads Overrides Sub Dispose()
    End Sub

when I run my app, it gives me this error:
An unhandled exception of type 'System.TypeLoadException' occurred in Paint Mall.exe

Additional information: Declaration referenced in a method implementation can not be a final method. Type: PaintMall.Ruler. Assembly: Dispose.


:confused:

Overrides Overloads Protected Sub Dispose(ByVal disposing As Boolean)

That is what the MSDN library has for it.

hey it worked, thanks! :)
what is that disposing boolean passed to the sub? what's the point

hmm, when I'm accessing my control from the Form, I see it as Dispose() , while it's declared as Dispose(boolean) in the control. Why is it? is it because of the protected keyword?