PDA中获得系统时间

在PDA中获得当前系统时间,开始时用System.DateTime.Now得到时间,可后来仔细一看,不对啊,时间相差一个小时,查了一下,也没弄清楚是什么原因,有弄清楚的,可以共享一下,后来我就改用了Wince中的API函数调用,才得到了正确的时间.(当然有的人也许考虑将时间加1,可我个人认为不托)

PDATime类

导入命名空间:using System.Runtime.InteropServices;

 public class PDATime
    {
        [DllImport("coredll.dll")]
        public static extern bool SetLocalTime(ref SYSTEMTIME Time);
        [DllImport("coredll.dll")]
        public static extern void GetLocalTime(ref SYSTEMTIME Time);
    }
    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 wMilliseconds;
        /// <summary>
        /// 从System.DateTime转换。
        /// </summary>
        /// <param name="time">System.DateTime类型的时间。</param>
        public void FromDateTime(DateTime time)
        {
            wYear = (ushort)time.Year;
            wMonth = (ushort)time.Month;
            wDayOfWeek = (ushort)time.DayOfWeek;
            wDay = (ushort)time.Day;
            wHour = (ushort)time.Hour;
            wMinute = (ushort)time.Minute;
            wSecond = (ushort)time.Second;
            //wMilliseconds = (ushort)time.Millisecond;
        }
        /// <summary>
        /// 转换为System.DateTime类型。
        /// </summary>
        /// <returns></returns>
        public DateTime ToDateTime()
        {
            return new DateTime(wYear, wMonth, wDay, wHour, wMinute, wSecond);
        }
        /// <summary>
        /// 静态方法。转换为System.DateTime类型。
        /// </summary>
        /// <param name="time">SYSTEMTIME类型的时间。</param>
        /// <returns></returns>
        public static DateTime ToDateTime(SYSTEMTIME time)
        {
            return time.ToDateTime();
        }
    }

 

 

使用:           

            SYSTEMTIME system = new SYSTEMTIME();    //结构体实例
            hx_fj_mobile.entity.PDATime.GetLocalTime(ref system);//设置时间
            this.label1.Text = system.ToDateTime().ToString();//显示当前时间