从互联网上获取时间 [英] Get Time from internet

问题描述

有没有人有代码可以从互联网上获取时间？

解决方案

 public static DateTime GetFastestNISTDate（）{var result = DateTime.MinValue; 
 //初始化NIST时间服务器列表
 // http://tf.nist.gov/tf-cgi/servers.cgi 
 string [] servers = new string [] { 
nist1-ny.ustiming.org，
nist1-nj.ustiming.org，
nist1-pa.ustiming.org，
time-a .nist.gov，
time-b.nist.gov，
nist1.aol-va.symmetricom.com，
nist1.columbiacountyga.gov，
nist1-chi.ustiming.org，
nist.expertsmi.com，
nist.netservicesgroup.com
}; 
 
 //以随机顺序尝试5台服务器以分散负载
 Random rnd = new Random（）; 
 foreach（服务器中的字符串服务器.OrderBy（s => rnd.NextDouble（））。Take（5））
 {
 try 
 {
 //连接到服务器（在端口13）并获得响应
 string serverResponse = string.Empty; 
 using（var reader = new StreamReader（new System.Net.Sockets.TcpClient（server，13）.GetStream（）））
 {
 serverResponse = reader.ReadToEnd（）; 
} 
 
 //如果收到回复
 if（！string.IsNullOrEmpty（serverResponse））
 {
 //拆分响应字符串（ 55596 11-02-14 13:54:11 00 0 0 478.1 UTC（NIST）*）
 string [] tokens = serverResponse.Split（''）; 
 
 //检查令牌数量
 if（tokens.Length> = 6）
 {
 //检查健康状况
字符串健康状况=令牌[5]; 
 if（health ==0）
 {
 //从服务器响应中获取日期和时间部分
 string [] dateParts = tokens [1] .Split（' - '）; 
 string [] timeParts = tokens [2] .Split（'：'）; 
 
 //创建一个DateTime实例
 DateTime utcDateTime = new DateTime（
 Convert.ToInt32（dateParts [0]）+ 2000，
 Convert.ToInt32（dateParts [ 1]），Convert.ToInt32（dateParts [2]），
 Convert.ToInt32（timeParts [0]），Convert.ToInt32（timeParts [1]），
 Convert.ToInt32（timeParts [2] ））; 
 
 //将收到的（UTC）DateTime值转换为本地时区
 result = utcDateTime.ToLocalTime（）; 
 
返回结果; 
 //成功收到回复;退出循环
 
} 
} 
 
} 
 
} 
捕获
 {
 / /忽略异常并尝试下一个服务器
} 
} 
返回结果; 
} 

你可以查看这个，对你有帮助$



http://www.codeproject.com/Answers/140474/how-to-get-internet-time-from-vb-net-application.aspx

http://www.google.com/codesearch/



试试这个

 var client = new TcpClient（64.90.182.55，13）; 
 using（var streamReader = new StreamReader（client.GetStream（）））
 {
 var response = streamReader.ReadToEnd（）; 
 var utcDateTimeString = response.Substring（7,17）; 
 var localDateTime = DateTime.ParseExact（utcDateTimeString，yy-MM-dd hh：mm：ss，CultureInfo.InvariantCulture，DateTimeStyles.AssumeUniversal）; 
} 

请通过此链接 http://stackoverflow.com/questions/6435099/get-datetime-from-internet-in-c-sharp

Does anyone have code to get time from internet?

解决方案

public static DateTime GetFastestNISTDate() { var result = DateTime.MinValue;     
 // Initialize the list of NIST time servers
        // http://tf.nist.gov/tf-cgi/servers.cgi
        string[] servers = new string[] {
"nist1-ny.ustiming.org",
"nist1-nj.ustiming.org",
"nist1-pa.ustiming.org",
"time-a.nist.gov",
"time-b.nist.gov",
"nist1.aol-va.symmetricom.com",
"nist1.columbiacountyga.gov",
"nist1-chi.ustiming.org",
"nist.expertsmi.com",
"nist.netservicesgroup.com"
};

        // Try 5 servers in random order to spread the load
        Random rnd = new Random();
        foreach (string server in servers.OrderBy(s => rnd.NextDouble()).Take(5))
        {
            try
            {
                // Connect to the server (at port 13) and get the response
                string serverResponse = string.Empty;
                using (var reader = new StreamReader(new System.Net.Sockets.TcpClient(server, 13).GetStream()))
                {
                    serverResponse = reader.ReadToEnd();
                }

                // If a response was received
                if (!string.IsNullOrEmpty(serverResponse))
                {
                    // Split the response string ("55596 11-02-14 13:54:11 00 0 0 478.1 UTC(NIST) *")
                    string[] tokens = serverResponse.Split(' ');

                    // Check the number of tokens
                    if (tokens.Length >= 6)
                    {
                        // Check the health status
                        string health = tokens[5];
                        if (health == "0")
                        {
                            // Get date and time parts from the server response
                            string[] dateParts = tokens[1].Split('-');
                            string[] timeParts = tokens[2].Split(':');

                            // Create a DateTime instance
                            DateTime utcDateTime = new DateTime(
                                Convert.ToInt32(dateParts[0]) + 2000,
                                Convert.ToInt32(dateParts[1]), Convert.ToInt32(dateParts[2]),
                                Convert.ToInt32(timeParts[0]), Convert.ToInt32(timeParts[1]),
                                Convert.ToInt32(timeParts[2]));

                            // Convert received (UTC) DateTime value to the local timezone
                            result = utcDateTime.ToLocalTime();

                            return result;
                            // Response successfully received; exit the loop

                        }
                    }

                }

            }
            catch
            {
                // Ignore exception and try the next server
            }
        }
        return result;
    }

You can check out this, would be helpful for u

http://www.codeproject.com/Answers/140474/how-to-get-internet-time-from-vb-net-application.aspx

http://www.google.com/codesearch/

Try this

var client = new TcpClient("64.90.182.55", 13);
using (var streamReader = new StreamReader(client.GetStream()))
{
    var response = streamReader.ReadToEnd();
    var utcDateTimeString = response.Substring(7, 17);
    var localDateTime = DateTime.ParseExact(utcDateTimeString, "yy-MM-dd hh:mm:ss", CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal);
}

pls go thru this linkhttp://stackoverflow.com/questions/6435099/get-datetime-from-internet-in-c-sharp

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