设置系统时间

    /// <summary>
    /// 设置系统时间
    /// </summary>
    public class SetSTime
    {
        [DllImport("Kernel32.dll")]
        public static extern bool SetSystemTime(ref SystemTime sysTime);
        [DllImport("Kernel32.dll")]
        public static extern void GetSystemTime(ref SystemTime sysTime);


        /// <summary>
        /// 设置系统时间方法
        /// </summary>
        /// <param name="dt"></param>
        public static void SetSysTime(DateTime dt)
        {
            //不知道什么原因，必须先加八个小时，才能是准确时间。估计是时区问题
            DateTime dateTimePicker1 = dt.AddHours(-8);

            SystemTime MySystemTime = new SystemTime();
            MySystemTime.vYear = (ushort)dateTimePicker1.Year;
            MySystemTime.vMonth = (ushort)dateTimePicker1.Month;
            MySystemTime.vDay = (ushort)dateTimePicker1.Day;
            MySystemTime.vHour = (ushort)dateTimePicker1.Hour;
            MySystemTime.vMinute = (ushort)dateTimePicker1.Minute;
            MySystemTime.vSecond = (ushort)dateTimePicker1.Second;

            try
            {

                SetSTime.SetSystemTime(ref MySystemTime);

                SystemTime st2 = new SystemTime();
                SetSTime.GetSystemTime(ref st2);
            }
            catch (Exception)
            {

                throw;
            }

        }
    }

    public struct SystemTime
    {
        public ushort vYear;
        public ushort vMonth;
        public ushort vDayOfWeek;
        public ushort vDay;
        public ushort vHour;
        public ushort vMinute;
        public ushort vSecond;
        public ushort vMiliseconds;
    }