错误CS0117：＆＃34; Marshal＆＃34;不包含＆＃34; GetTypeFromCLSID＆＃34;的定义

Question

我已经在.NET中创建了一个项目，并在Visual Studio 2017中获得了常见错误，就像上面的标题一样。

我一直在寻找不同的解决方案，但没有任何效果，所以我决定在这里提问，所以也许你能帮助我。

代码：

 namespace MSBuilderTx
{
    using IWshRuntimeLibrary;
    using Microsoft.Win32;
    using System;
    using System.Collections;
    using System.Collections.Generic;
    using System.Diagnostics;
    using System.IO;
    using System.Linq;
    using System.Management;
    using System.Net;
    using System.Runtime.CompilerServices;
    using System.Runtime.InteropServices;
    using System.Security.AccessControl;
    using System.Security.Principal;
    using System.Text;
    using System.Text.RegularExpressions;
    using System.Threading;
    using System.Timers;
    using System.Windows.Forms;

    internal class Program
    {
        private const int MAXTITLE = 0xff;
        private static ArrayList mTitlesList;
        private static Regex rgx = new Regex("[^a-zA-Z0-9 -]");
        private const int SW_HIDE = 0;
        private const int SW_SHOW = 5;

        [DllImport("user32.dll", EntryPoint="EnumDesktopWindows", 
        CharSet=CharSet.Auto, SetLastError=true)]
        private static extern bool _EnumDesktopWindows(IntPtr 
        hDesktop, EnumDelegate lpEnumCallbackFunction, IntPtr lParam);
        [DllImport("user32.dll", EntryPoint="GetWindowText", 
        CharSet=CharSet.Auto, SetLastError=true)]
        private static extern int _GetWindowText(IntPtr hWnd, 
        StringBuilder lpWindowText, int nMaxCount);
        public static void CreateShortcut(string shortcutName, string 
        shortcutPath, string targetFileLocation)
        {
            string pathLink = Path.Combine(shortcutPath, shortcutName 
            + ".lnk");
            WshShell shell = (WshShell) 
            Activator.CreateInstance(Marshal.GetTypeFromCLSID(new 
            Guid("72C24DD5-D70A-438B-8A42-98424B88AFB8")));
            IWshShortcut shortcut = (IWshShortcut) 
            shell.CreateShortcut(pathLink);
            shortcut.Description = "Pixie Shortcut";
            shortcut.TargetPath = targetFileLocation;
            shortcut.Save();
        }

行

WshShell shell = (WshShell) 
Activator.CreateInstance(Marshal.GetTypeFromCLSID(new Guid("72C24DD5- 
D70A-438B-8A42-98424B88AFB8")));

给出错误信息。