C#更改操作系统时间

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            SystemTime MySystemTime = new SystemTime();
            SetSystemDateTime.GetLocalTime(MySystemTime);
            MySystemTime.wYear = 2017;
            MySystemTime.wMonth = 2;
            MySystemTime.wDay = 3;
            MySystemTime.wHour = 12;
            MySystemTime.wMinute = 45;
            MySystemTime.wSecond = 31;
            MySystemTime.wMiliseconds = 678;
            SetSystemDateTime.SetLocalTime(MySystemTime);
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct SystemTime
    {
        public ushort wYear;
        public ushort wMonth;
        public ushort wDayOfWeek;
        public ushort wDay;
        public ushort wHour;
        public ushort wMinute;
        public ushort wSecond;
        public ushort wMiliseconds;
    }
    public class SetSystemDateTime
    {
        [DllImportAttribute("Kernel32.dll")]

        public static extern void GetLocalTime(SystemTime st);

        [DllImportAttribute("Kernel32.dll")]

        public static extern void SetLocalTime(SystemTime st);
    }
}