using System;

​

using System.Runtime.InteropServices;                   

public class Program

{

    public static void Main()

    {

        IntPtr p = IntPtr.Zero;

        IntPtr dsSL = IntPtr.Zero +1;

        p = (IntPtr)(((int)dsSL) + Marshal.SizeOf(typeof(DS_SELECTION_LIST)));

        if(IntPtr.Zero.Equals(p) == false)

        {

            Console.WriteLine("Hello");

            //Marshal.DestroyStructure(p, typeof(DS_SELECTION));

            //Marshal.DestroyStructure<DS_SELECTION>(p);

        }

    }

    internal struct DS_SELECTION

    {

        [MarshalAs(UnmanagedType.LPWStr)]

        public string pwzName;

    }

​

    internal struct DS_SELECTION_LIST

    {

        public uint cFetchedAttributes;

    }

}