c# 修改客户端的机器时间

在程序中修改客户端的机器时间,我认为有2种方法:

1,用命令方式.net time. 由于本人比较愚笨,这种方法木有学会.

2,获取一个网络时间,然后修改. 这里就比较简单,容易理解了, 这里用win32的方法修改机器时间.那么,怎么获取网络时间呢,这里又可以分成2种方法,一中是直接读取一个url,获取内容,然后转换成我们需要时间,第二种是socket,连接服务器,读取数据流.

 

我在项目中,运用的第二种方法来修改客户端的机器时间.获取网络时间,用的是第一种,读取url方式.

#region 获取北京时间
        /// <summary>
        /// 获取北京时间
        /// </summary>
        /// <returns></returns>
        public static DateTime GetBjDatetime()
        {
            try
            {
                //http://www.beijing-time.org/time.asp
              
                string html = string.Empty;
                try
                {
                    html = FetchUrl("自己网站的一个地址,提供数据输出", Encoding.UTF8);
                }
                catch
                {
                    html = FetchUrl("http://www.beijing-time.org/time.asp", Encoding.UTF8);
                }
                string year = RegexMatch(html, "nyear=");
                string month = RegexMatch(html, "nmonth=");
                string day = RegexMatch(html, "nday=");
                string hour = RegexMatch(html, "nhrs=");
                string minite = RegexMatch(html, "nmin=");
                string second = RegexMatch(html, "nsec=");
                DateTime dt = DateTime.Parse(year + "-" + month + "-" + day + " " + hour + ":" + minite + ":" + second);
                return dt;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        private static string RegexMatch(string originalText, string patternStr)
        {
            Match m = Regex.Match(originalText, patternStr + "(?<v>\\d+);", RegexOptions.IgnoreCase);
            return m.Success ? m.Groups["v"].ToString() : string.Empty;
        }

        private static string FetchUrl(string url, Encoding coding)
        {
            HttpWebRequest request = null;
            HttpWebResponse response = null;
            Stream stm = null;
            StreamReader reader = null;
            try
            {
                request = (HttpWebRequest)WebRequest.Create(url);
                request.Timeout = 1000 * 3;//设置超时时间为3秒
                response = (HttpWebResponse)request.GetResponse();
                stm = response.GetResponseStream();
                reader = new StreamReader(stm, coding);
                string content = reader.ReadToEnd();
                return content;
            }
            catch (Exception exp)
            {
                throw exp;
            }
            finally
            {
                if (reader != null) reader.Close();
                if (stm != null) stm.Close();
                if (response != null) response.Close();
            }
        }
        #endregion

 还有一种socket获取网络时间代码也贴出来

        /// <summary>
        /// tcp 获取网络时间
        /// </summary>
        /// <returns></returns>
        public static DateTime GetNetworkTime()
        {

            System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient();
            client.Connect("132.163.4.102", 13);
            System.Net.Sockets.NetworkStream ns = client.GetStream();
            byte[] bytes = new byte[1024];
            int bytesRead = 0;
            bytesRead = ns.Read(bytes, 0, bytes.Length);
            client.Close();
            char[] sp = new char[1];
            sp[0] = ' ';
            DateTime dt = new DateTime();
            string str1;
            str1 = System.Text.Encoding.ASCII.GetString(bytes, 0, bytesRead);

            string[] s;
            s = str1.Split(sp);
            if (s.Length >= 2)
            {
                dt = System.DateTime.Parse(s[1] + " " + s[2]);//得到标准时间
                dt = dt.AddHours(8);//得到北京时间
            }
            return dt;
        }

下面是win32方法修改本机时间

    [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;

        public SystemTime(ushort _year, ushort _month, ushort _dayofweek, ushort _day, ushort _hour, ushort _minute, ushort _second, ushort _milliseconds)
        {
            this.year = _year;
            this.month = _month;
            this.dayofweek = _dayofweek;
            this.day = _day;
            this.hour = _hour;
            this.minute = _minute;
            this.second = _second;
            this.milliseconds = _milliseconds;
        }
    }

    public class ReSetLocalTimeFromNetwork
    {
        [DllImport("Kernel32.dll", SetLastError = true)]
        private static extern Boolean SetLocalTime([In, Out] SystemTime st);
        [DllImport("kernel32", SetLastError = true)]
        private static extern int GetLastError();

        /// <summary>
        /// 设置系统时间
        /// </summary>
        /// <param name="newdatetime">新时间</param>
        /// <returns></returns>
        private static bool SetSysTime(SystemTime sysTime)
        {
            bool flag = SetLocalTime(sysTime);
            if (flag == false)
            {
                int intValue = GetLastError();
                throw new Exception(intValue.ToString() + " error, can't set local time.");
            }
            return flag;
        }

        /// <summary>
        /// 转换时间
        /// </summary>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static SystemTime ConvertDatetime(DateTime dt)
        {
            return new SystemTime(Convert.ToUInt16(dt.Year), Convert.ToUInt16(dt.Month), Convert.ToUInt16(dt.DayOfWeek)
                , Convert.ToUInt16(dt.Day), Convert.ToUInt16(dt.Hour), Convert.ToUInt16(dt.Minute), Convert.ToUInt16(dt.Second),
                Convert.ToUInt16(dt.Millisecond));
        }

    }

 最后,把这个类上传上来

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

namespace Somnus
{
    [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;

        public SystemTime(ushort _year, ushort _month, ushort _dayofweek, ushort _day, ushort _hour, ushort _minute, ushort _second, ushort _milliseconds)
        {
            this.year = _year;
            this.month = _month;
            this.dayofweek = _dayofweek;
            this.day = _day;
            this.hour = _hour;
            this.minute = _minute;
            this.second = _second;
            this.milliseconds = _milliseconds;
        }
    }

    public class ReSetLocalTimeFromNetwork
    {
        [DllImport("Kernel32.dll", SetLastError = true)]
        private static extern Boolean SetLocalTime([In, Out] SystemTime st);
        [DllImport("kernel32", SetLastError = true)]
        private static extern int GetLastError();

        public static bool SetSysTime()
        {
            return SetSysTime(ConvertDatetime(GetBjDatetime()));
        }

        /// <summary>
        /// 设置系统时间
        /// </summary>
        /// <param name="newdatetime">新时间</param>
        /// <returns></returns>
        private static bool SetSysTime(SystemTime sysTime)
        {
            bool flag = SetLocalTime(sysTime);
            if (flag == false)
            {
                int intValue = GetLastError();
                throw new Exception(intValue.ToString() + " error, can't set local time.");
            }
            return flag;
        }

        /// <summary>
        /// 转换时间
        /// </summary>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static SystemTime ConvertDatetime(DateTime dt)
        {
            return new SystemTime(Convert.ToUInt16(dt.Year), Convert.ToUInt16(dt.Month), Convert.ToUInt16(dt.DayOfWeek)
                , Convert.ToUInt16(dt.Day), Convert.ToUInt16(dt.Hour), Convert.ToUInt16(dt.Minute), Convert.ToUInt16(dt.Second),
                Convert.ToUInt16(dt.Millisecond));
        }

        #region 获取北京时间
        /// <summary>
        /// 获取北京时间
        /// </summary>
        /// <returns></returns>
        public static DateTime GetBjDatetime()
        {
            try
            {
                //http://www.beijing-time.org/time.asp
                string html = string.Empty;
                try
                {
                    html = FetchUrl("自己的网站输出一个时间", Encoding.UTF8);
                }
                catch
                {
                    html = FetchUrl("http://www.beijing-time.org/time.asp", Encoding.UTF8);
                }
                string year = RegexMatch(html, "nyear=");
                string month = RegexMatch(html, "nmonth=");
                string day = RegexMatch(html, "nday=");
                string hour = RegexMatch(html, "nhrs=");
                string minite = RegexMatch(html, "nmin=");
                string second = RegexMatch(html, "nsec=");
                DateTime dt = DateTime.Parse(year + "-" + month + "-" + day + " " + hour + ":" + minite + ":" + second);
                return dt;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        private static string RegexMatch(string originalText, string patternStr)
        {
            Match m = Regex.Match(originalText, patternStr + "(?<v>\\d+);", RegexOptions.IgnoreCase);
            return m.Success ? m.Groups["v"].ToString() : string.Empty;
        }

        private static string FetchUrl(string url, Encoding coding)
        {
            HttpWebRequest request = null;
            HttpWebResponse response = null;
            Stream stm = null;
            StreamReader reader = null;
            try
            {
                request = (HttpWebRequest)WebRequest.Create(url);
                request.Timeout = 1000 * 3;//设置超时时间为3秒
                response = (HttpWebResponse)request.GetResponse();
                stm = response.GetResponseStream();
                reader = new StreamReader(stm, coding);
                string content = reader.ReadToEnd();
                return content;
            }
            catch (Exception exp)
            {
                throw exp;
            }
            finally
            {
                if (reader != null) reader.Close();
                if (stm != null) stm.Close();
                if (response != null) response.Close();
            }
        }


        /// <summary>
        /// tcp 获取网络时间
        /// </summary>
        /// <returns></returns>
        public static DateTime GetNetworkTime()
        {
            System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient();
            client.Connect("132.163.4.102", 13);
            System.Net.Sockets.NetworkStream ns = client.GetStream();
            byte[] bytes = new byte[1024];
            int bytesRead = 0;
            bytesRead = ns.Read(bytes, 0, bytes.Length);
            client.Close();
            char[] sp = new char[1];
            sp[0] = ' ';
            DateTime dt = new DateTime();
            string str1;
            str1 = System.Text.Encoding.ASCII.GetString(bytes, 0, bytesRead);

            string[] s;
            s = str1.Split(sp);
            if (s.Length >= 2)
            {
                dt = System.DateTime.Parse(s[1] + " " + s[2]);//得到标准时间
                dt = dt.AddHours(8);//得到北京时间
            }
            return dt;
        }
        #endregion

    }
}

OK,全部完事,并非原创,本人代码也比较粗糙,功能很实用.