用c#怎么修改系统的时间啊！

Question

控制台程序要怎么写代码来修改系统的时间啊！请各位大虾帮帮我！

Answer 1

可参考
http://www.codeproject.com/csharp/Launch.asp?df=100&forumid=321204&exp=0&select=1563724

Answer 2

调用windows API　SetLocalTime.
如：
[DllImport("kernel32.dll", SetLastError=true)]  
public static extern int SetLocalTime (ref SystemTime lpSystemTime); 其中引用的结构定义如下：public struct SystemTime 
{ 
public short wYear; 
public short wMonth; 
public short wDayOfWeek; 
public short wDay; 
public short wHour; 
public short wMinute; 
public short wSecond; 
public short wMilliseconds; 
}

Answer 3

利用WINAPI的public static extern bool SetLocalTime( ref SYSTEMTIME Time)实现
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;
 
///从System.DateTime转换。
    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;
    }
 
    ///转换为System.DateTime类型。   
    public DateTime ToDateTime()
    {
       return new DateTime(wYear, wMonth, wDay, wHour, wMinute, wSecond, wMilliseconds);
    }
    ///<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();
    }
}
 
public class Win32API
{
    [DllImport("Kernel32.dll")]
    public static extern bool SetLocalTime( ref SYSTEMTIME Time );
    [DllImport("Kernel32.dll")]
    public static extern void GetLocalTime(ref SYSTEMTIME Time);
}
 
          public void setTime()//一般
       {
           /*获得彩屏时间*/
           ReceiveCanDataFromJK(0x50);//获得目录
 
           
           int hour= CanData50[0,0,4]&0x1f;
           int minute=CanData50[0,0,5]&0x3f;
           int second= CanData50[0,0,6]&0x3f;
           int minisecond= (CanData50[0,0,7]&0x7f)*10; //CanData50[0,0,7]百分秒
 
           DateTime t = DateTime.Now; //获取当前时间
           t=t.AddHours(hour-t.Hour);
           t=t.AddMinutes(minute-t.Minute);
           t=t.AddSeconds(second-t.Second);
           t=t.AddMilliseconds(minisecond-t.Millisecond);
           //转换System.DateTime到SYSTEMTIME
           SYSTEMTIME st = new SYSTEMTIME();
           st.FromDateTime(t);
           //调用Win32 API设置系统时间
           Win32API.SetLocalTime(ref st);
       }

Answer 4

using System.Runtime.InteropServices;[StructLayout(LayoutKind.Sequential)]
public class SystemTime
{
    public ushort year;
    public ushort month;
    public ushort dayOfWeek;
    public ushort day;
    public ushort hour;
    public ushort minute;
    public ushort second;
    public ushort milliseconds;
}
[DllImport("Kernel32.dll")]
public static extern void GetSystemTime([In, Out] SystemTime st);[DllImport("Kernel32.dll")]
public static extern bool SetSystemTime([In, Out] SystemTime st);SystemTime vSystemTime = new SystemTime();
GetSystemTime(vSystemTime);
vSystemTime.year += 1;
SetSystemTime(vSystemTime);