核心代码：

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(); //得到主机名                IPHostEntry IpEntry = Dns.GetHostEntry(HostName);                for (int i = 0; i < IpEntry.AddressList.Length; i++)                {                    //从IP地址列表中筛选出IPv4类型的IP地址                    //AddressFamily.InterNetwork表示此IP为IPv4,                    //AddressFamily.InterNetworkV6表示此地址为IPv6类型                    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();   //此步骤多余，为方便程序而用直接用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：            //结构体的wDayOfWeek属性一般不用赋值，函数会自动计算，写了如果不对应反而会出错            //wMiliseconds属性默认值为一，可以赋值            try            {                flag = SetLocalTime(ref sysTime);            }            //由于不是C#本身的函数，很多异常无法捕获            //函数执行成功则返回true，函数执行失败返回false            //经常不返回异常，不提示错误，但是函数返回false，给查找错误带来了一定的困难            catch (Exception ex1)            {                Console.WriteLine("SetLocalTime函数执行异常" + ex1.Message);            }            return flag;        }    }}

调用代码：

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"));        }    }}