Why Can't I Inherit IO.Directory?

Question

Why can't I create a class in VB.NET that inherits System.IO.Directory? According to Lutz Roeder, it is not declared as NotInheritable!

I want to create a utility class that adds functionality to the Directory class. For instance, I want to add a Directory.Move function.

Please advise and I will send you a six pack. OK nevermind I'm not sending you anything but if you come to the bar tonight I will hook you up and then beat you in pool.

Answer 1

From the Meta Data of .NET

namespace System.IO
{
    // Summary:
    //     Exposes static methods for creating, moving, and enumerating through directories
    //     and subdirectories. This class cannot be inherited.
    [ComVisible(true)]
    public static class Directory

You cannot inherit from a Static Class.