.NET (Core and Framework)

{Name = "__ComObject" FullName = "System.__ComObject"}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Runtime.InteropServices.ComTypes;
using System.Collections;


public void CreateClassEnumerator([In] System.Guid clsidDeviceClass, [Out] out System.Runtime.InteropServices.ComTypes.IEnumMoniker ppEnumMoniker, [In] uint dwFlags)
{
                Guid clsidSystemDeviceEnum;
//            ICreateDevEnum pSysDevEnum;


                // Initialize the return value.
                ppEnumMoniker = null;

                try
                {
                                // Defined in "C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Include\uuids.h" on line 960
                                clsidSystemDeviceEnum = new Guid("62BE5D10-60EB-11d0-BD3B-00A0C911CE86");

                                // Get the COM type from the class ID.
                                Type comType = Type.GetTypeFromCLSID(clsidSystemDeviceEnum, true);

                                // Create the COM instance for this object.
                                object oEnum;
                                oEnum = Activator.CreateInstance(comType);

                                // Create the device enumerator (COM) object.
//                            pSysDevEnum = oEnum as ICreateDevEnum;

                                // etc., etc., etc.
                }

                catch (Exception ex)
                {
                                MessageBox.Show(ex.Message, Application.ProductName, MessageBoxButtons.OK);
                }
}

Normal layout:
 
    If expression Then
        result if True
    Else
        result if False
    End If
 
'Not' layout:
 
    If expression Then
        result if False
    Else
        result if True
    End If

The IsNot operator cannot be used to compare expressions returned from the TypeOf operator. Instead, you must use the Not and Is operators.