C#更改系統時間

標籤：c#更改系統時間

核心代碼：

using System;using System.Collections.Generic;using System.Linq;using System.Net;using System.Net.Sockets;using System.Runtime.InteropServices;using System.Text;using System.Threading.Tasks;namespace TestServerTime{    public class ServerInfo    {        public static string GetHostName()        {            return Dns.GetHostName();        }        public static string GetLocalIP()        {            string ip = "";            try            {                string HostName = Dns.GetHostName(); //得到主機名稱                IPHostEntry IpEntry = Dns.GetHostEntry(HostName);                for (int i = 0; i < IpEntry.AddressList.Length; i++)                {                    //從IP地址清單中篩選出IPv4類型的IP地址                    //AddressFamily.InterNetwork表示此IP為IPv4,                    //AddressFamily.InterNetworkV6表示此地址為IPv6類型                    if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)                    {                        ip = IpEntry.AddressList[i].ToString();                    }                }            }            catch (Exception ex)            {                throw ex;            }            return ip;        }        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]        internal static extern bool SetLocalTime(ref SYSTEMTIME lpSystemTime);        [StructLayout(LayoutKind.Sequential)]        internal struct SYSTEMTIME        {            public ushort wYear;            public ushort wMonth;            public ushort wDayOfWeek;    // ignored for the SetLocalTime function            public ushort wDay;            public ushort wHour;            public ushort wMinute;            public ushort wSecond;            public ushort wMilliseconds;        }        public static bool SetLocalTimeByStr(string timestr)        {            bool flag = false;            SYSTEMTIME sysTime = new SYSTEMTIME();            string SysTime = timestr.Trim();   //此步驟多餘，為方便程式而用直接用timestr即可            sysTime.wYear = Convert.ToUInt16(SysTime.Substring(0, 4));            sysTime.wMonth = Convert.ToUInt16(SysTime.Substring(4, 2));            sysTime.wDay = Convert.ToUInt16(SysTime.Substring(6, 2));            sysTime.wHour = Convert.ToUInt16(SysTime.Substring(8, 2));            sysTime.wMinute = Convert.ToUInt16(SysTime.Substring(10, 2));            sysTime.wSecond = Convert.ToUInt16(SysTime.Substring(12, 2));            //注意：            //結構體的wDayOfWeek屬性一般不用賦值，函數會自動計算，寫了如果不對應反而會出錯            //wMiliseconds屬性預設值為一，可以賦值            try            {                flag = SetLocalTime(ref sysTime);            }            //由於不是C#本身的函數，很多異常無法捕獲            //函數執行成功則返回true，函數執行失敗返回false            //經常不返回異常，不提示錯誤，但是函數返回false，給尋找錯誤帶來了一定的困難            catch (Exception ex1)            {                Console.WriteLine("SetLocalTime函數執行異常" + ex1.Message);            }            return flag;        }    }}

調用代碼：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace TestServerTime{    class Program    {        static void Main(string[] args)        {            string destTime = "2015-11-12 15:09:24";            SetServerTime(destTime);           System.Console.WriteLine( DateTime.Now.ToLocalTime());           System.Console.ReadLine();                           }        public static void SetServerTime(string destTime)        {            ServerInfo.SetLocalTimeByStr(DateTime.Parse(destTime).ToString("yyyyMMddHHmmss"));        }    }}

本文出自 “愛工作愛生活” 部落格，請務必保留此出處http://4453154.blog.51cto.com/4443154/1712241

C#更改系統時間