.NET Shell Extensions - Shell Drop Handlers

using System;
using SharpShell.Interop;

namespace SharpShell.SharpContextMenu
{
    public static class SharpContextMenuValidator
    {
        public static void Validate(SharpContextMenu sharpContextMenu)
        {
            //  Can we create an instance?
            var clsid = ((ISharpShellServer) sharpContextMenu).ServerClsid;
            var type = Type.GetTypeFromCLSID(clsid, true);

            //  Instantiate it.
            var instance = Activator.CreateInstance(type);

            var guidIContextMenu = typeof (IContextMenu).GUID;
            object menu = null;
            Ole32.CoCreateInstance(clsid, null, CLSCTX.CLSCTX_INPROC, guidIContextMenu, out menu);
            var contextMenu = (IContextMenu) menu;
        }
    }
}