C#设置系统时间的方法实例详解

设置系统时间

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.IO;
using  System.Net;
using  System.Net.Sockets;
using  System.Text.RegularExpressions;
using  System.Runtime.InteropServices;
using  System.Runtime;

  ///

 /// 更新系统时间
 ///
 public  class  UpdateTime
 {
  //设置系统时间的API函数
  [DllImport( "kernel32.dll" )]
  private  static  extern  bool  SetLocalTime( ref  SYSTEMTIME time);
  [StructLayout(LayoutKind.Sequential)]
  private  struct  SYSTEMTIME
  {
   public  short  year;
   public  short  month;
   public  short  dayOfWeek;
   public  short  day;
   public  short  hour;
   public  short  minute;
   public  short  second;
   public  short  milliseconds;
  }

   ///

  /// 设置系统时间
  ///
  /// 需要设置的时间
  /// 返回系统时间设置状态，true为成功，false为失败
  public  static  bool  SetDate(DateTime dt)
  {
   SYSTEMTIME st;
   st.year = ( short )dt.Year;
   st.month = ( short )dt.Month;
   st.dayOfWeek = ( short )dt.DayOfWeek;
   st.day = ( short )dt.Day;
   st.hour = ( short )dt.Hour;
   st.minute = ( short )dt.Minute;
   st.second = ( short )dt.Second;
   st.milliseconds = ( short )dt.Millisecond;
   bool  rt = SetLocalTime( ref  st);
   return  rt;
  }
}