1.         //方法2、获取ntp时间
    2.         public static DateTime DataStandardTime()//使用时，将static 关键字删除，在其它位置方可使用?2010-11-24
    3.         {//返回国际标准时间
    4.             //只使用的TimerServer的IP地址，未使用域名
    5.             string[,] TimerServer = new string[14, 2];
    6.             int[] ServerTab = new int[] { 3, 2, 4, 8, 9, 6, 11, 5, 10, 0, 1, 7, 12 };
    7.             TimerServer[0, 0] = "time-a.nist.gov";
    8.             TimerServer[0, 1] = "129.6.15.28";
    9.             TimerServer[1, 0] = "time-b.nist.gov";
    10.             TimerServer[1, 1] = "129.6.15.29";
    11.             TimerServer[2, 0] = "time-a.timefreq.bldrdoc.gov";
    12.             TimerServer[2, 1] = "132.163.4.101";
    13.             TimerServer[3, 0] = "time-b.timefreq.bldrdoc.gov";
    14.             TimerServer[3, 1] = "132.163.4.102";
    15.             TimerServer[4, 0] = "time-c.timefreq.bldrdoc.gov";
    16.             TimerServer[4, 1] = "132.163.4.103";
    17.             TimerServer[5, 0] = "utcnist.colorado.edu";
    18.             TimerServer[5, 1] = "128.138.140.44";
    19.             TimerServer[6, 0] = "time.nist.gov";
    20.             TimerServer[6, 1] = "192.43.244.18";
    21.             TimerServer[7, 0] = "time-nw.nist.gov";
    22.             TimerServer[7, 1] = "131.107.1.10";
    23.             TimerServer[8, 0] = "nist1.symmetricom.com";
    24.             TimerServer[8, 1] = "69.25.96.13";
    25.             TimerServer[9, 0] = "nist1-dc.glassey.com";
    26.             TimerServer[9, 1] = "216.200.93.8";
    27.             TimerServer[10, 0] = "nist1-ny.glassey.com";
    28.             TimerServer[10, 1] = "208.184.49.9";
    29.             TimerServer[11, 0] = "nist1-sj.glassey.com";
    30.             TimerServer[11, 1] = "207.126.98.204";
    31.             TimerServer[12, 0] = "nist1.aol-ca.truetime.com";
    32.             TimerServer[12, 1] = "207.200.81.113";
    33.             TimerServer[13, 0] = "nist1.aol-va.truetime.com";
    34.             TimerServer[13, 1] = "64.236.96.53";
    35.             int portNum = 13;
    36.             string hostName;
    37.             byte[] bytes = new byte[1024];
    38.             int bytesRead = 0;
    39.             System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient();
    40.             for (int i = 0; i < 13; i++)
    41.             {
    42.                 hostName = TimerServer[ServerTab[i], 0];
    43.                 // Debug.WriteLine("hostName:" + hostName);
    44.                 try
    45.                 {
    46.                     client.Connect(hostName, portNum);
    47.                     System.Net.Sockets.NetworkStream ns = client.GetStream();
    48.                     bytesRead = ns.Read(bytes, 0, bytes.Length);
    49.                     client.Close();
    50.                     break;
    51.                 }
    52.                 catch (Exception)
    53.                 {
    54.                     Debug.WriteLine("错误！");
    55.                 }
    56.             }
    57.             char[] sp = new char[1];
    58.             sp[0] = ' ';
    59.             DateTime dt = new DateTime();
    60.             string str1 = Encoding.ASCII.GetString(bytes, 0, bytesRead);
    62.             if (!(str1 == string.Empty))
    63.             {
    64.                 //Debug.WriteLine("ntp time:" + str1);
    65.                 string[] s = str1.Split(sp);
    66.                 try
    67.                 {
    68.                     dt = DateTime.Parse(s[1] + " " + s[2]);
    69.                 }
    70.                 catch (Exception)
    71.                 {
    72.                     MessageBox.Show(str1);
    73.                     return DateTime.Parse("2099-1-1");
    74.                 }
    75.                 //得到标准时间
    76.                 //Debug.WriteLine("get:" + dt.ToShortTimeString());
    77.                 dt = dt.AddHours(8);//得到北京时间*/
    78.                 return dt;
    79.             }
    80.             else
    81.             {
    82.                 MessageBox.Show("请检查网络");
    83.                 return DateTime.Parse("2099-1-1");
    84.             }
    85.         }