C# 实现获取网络时间

C# Winform获取网络时间,同时显示本地时间,支持毫秒显示


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C# 实现获取网络时间_第1张图片
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代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.Diagnostics;
using System.Net;
using System.Net.Sockets;

using System.Runtime;
using System.Runtime.InteropServices;
using System.Drawing.Drawing2D;

namespace WindowsFormsTimer
{
    public partial class Form1 : Form
    {

        Point CPoint;//获取控件中鼠标的坐标
        int Frm_Height = 0;
        int FrmHeight = 0;
        static int Tem_place = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            timer.Start();

            Frm_Height = this.Height;
            FrmHeight = this.Height;


            button_Click(null, null);
        }

        // 小端存储与大端存储的转换
        private uint swapEndian(ulong x)
        {
            return (uint)(((x & 0x000000ff) << 24) +
            ((x & 0x0000ff00) << 8) +
            ((x & 0x00ff0000) >> 8) +
            ((x & 0xff000000) >> 24));
        }

        // 方法1、获取NTP网络时间
        public DateTime getWebTime()
        {
            // default ntp server
            const string ntpServer = "ntp1.aliyun.com";
 
            // NTP message size - 16 bytes of the digest (RFC 2030)
            byte[] ntpData = new byte[48];
            // Setting the Leap Indicator, Version Number and Mode values
            ntpData[0] = 0x1B; // LI = 0 (no warning), VN = 3 (IPv4 only), Mode = 3 (Client Mode)
               
            IPAddress[] addresses = Dns.GetHostEntry(ntpServer).AddressList;
            foreach (var item in addresses)
            {
                Debug.WriteLine("IP:"+ item); 
            }
            
            // The UDP port number assigned to NTP is 123
            IPEndPoint ipEndPoint = new IPEndPoint(addresses[0], 123);
            
            // NTP uses UDP
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            socket.Connect(ipEndPoint);
            // Stops code hang if NTP is blocked
            socket.ReceiveTimeout = 3000;
            socket.Send(ntpData);
            socket.Receive(ntpData);
            socket.Close();
 
            // Offset to get to the "Transmit Timestamp" field (time at which the reply 
            // departed the server for the client, in 64-bit timestamp format."
            const byte serverReplyTime = 40;
            // Get the seconds part
            ulong intPart = BitConverter.ToUInt32(ntpData, serverReplyTime);
            // Get the seconds fraction
            ulong fractPart = BitConverter.ToUInt32(ntpData, serverReplyTime + 4);
            // Convert From big-endian to little-endian
            intPart = swapEndian(intPart);
            fractPart = swapEndian(fractPart);
            ulong milliseconds = (intPart * 1000) + ((fractPart * 1000) / 0x100000000UL);
 
            // UTC time
            DateTime webTime = (new DateTime(1900, 1, 1, 0, 0, 0, DateTimeKind.Utc)).AddMilliseconds(milliseconds);
            // Local time
            return webTime.ToLocalTime();
        }

        //方法2、获取ntp时间
        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
        {//返回国际标准时间
            //只使用的TimerServer的IP地址,未使用域名
            string[,] TimerServer = new string[14, 2];
            int[] ServerTab = new int[] { 3, 2, 4, 8, 9, 6, 11, 5, 10, 0, 1, 7, 12 };

            TimerServer[0, 0] = "time-a.nist.gov";
            TimerServer[0, 1] = "129.6.15.28";
            TimerServer[1, 0] = "time-b.nist.gov";
            TimerServer[1, 1] = "129.6.15.29";
            TimerServer[2, 0] = "time-a.timefreq.bldrdoc.gov";
            TimerServer[2, 1] = "132.163.4.101";
            TimerServer[3, 0] = "time-b.timefreq.bldrdoc.gov";
            TimerServer[3, 1] = "132.163.4.102";
            TimerServer[4, 0] = "time-c.timefreq.bldrdoc.gov";
            TimerServer[4, 1] = "132.163.4.103";
            TimerServer[5, 0] = "utcnist.colorado.edu";
            TimerServer[5, 1] = "128.138.140.44";
            TimerServer[6, 0] = "time.nist.gov";
            TimerServer[6, 1] = "192.43.244.18";
            TimerServer[7, 0] = "time-nw.nist.gov";
            TimerServer[7, 1] = "131.107.1.10";
            TimerServer[8, 0] = "nist1.symmetricom.com";
            TimerServer[8, 1] = "69.25.96.13";
            TimerServer[9, 0] = "nist1-dc.glassey.com";
            TimerServer[9, 1] = "216.200.93.8";
            TimerServer[10, 0] = "nist1-ny.glassey.com";
            TimerServer[10, 1] = "208.184.49.9";
            TimerServer[11, 0] = "nist1-sj.glassey.com";
            TimerServer[11, 1] = "207.126.98.204";
            TimerServer[12, 0] = "nist1.aol-ca.truetime.com";
            TimerServer[12, 1] = "207.200.81.113";
            TimerServer[13, 0] = "nist1.aol-va.truetime.com";
            TimerServer[13, 1] = "64.236.96.53";
            int portNum = 13;
            string hostName;
            byte[] bytes = new byte[1024];
            int bytesRead = 0;
            System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient();
            for (int i = 0; i < 13; i++)
            {
                hostName = TimerServer[ServerTab[i], 0];

                Debug.WriteLine("hostName:"+hostName);
                try
                {
                    client.Connect(hostName, portNum);

                    System.Net.Sockets.NetworkStream ns = client.GetStream();
                    bytesRead = ns.Read(bytes, 0, bytes.Length);
                    client.Close();
                    break;
                }
                catch (System.Exception)
                {
                    Debug.WriteLine("错误!");
                }
            }
            char[] sp = new char[1];
            sp[0] = ' ';
            System.DateTime dt = new DateTime();
            string str1;
            str1 = System.Text.Encoding.ASCII.GetString(bytes, 0, bytesRead);
            Debug.WriteLine("ntp time:"+str1);

            string[] s;
            s = str1.Split(sp);
            dt = System.DateTime.Parse(s[1] + " " + s[2]);//得到标准时间
            Debug.WriteLine("get:"+dt.ToShortTimeString());
            //dt=dt.AddHours (8);//得到北京时间*/
            return dt;

        }

        //方法3、获取网页时间

        //Bdpagetype:2
        //Bdqid:0xaff4e50f00011b53
        //Cache-Control:private
        //Connection:Keep-Alive
        //Content-Encoding:gzip
        //Content-Type:text/html;charset=utf-8
        //Date:Tue, 23 Oct 2018 03:24:38 GMTv
        public static string GetNetDateTime()
        {
            WebRequest request = null;
            WebResponse response = null;
            WebHeaderCollection headerCollection = null;
            string datetime = string.Empty;
            try
            {
                request = WebRequest.Create("https://www.baidu.com");
                request.Timeout = 1000;
                request.Credentials = CredentialCache.DefaultCredentials;
                response = (WebResponse)request.GetResponse();
                headerCollection = response.Headers;
                foreach (var h in headerCollection.AllKeys)
                { if (h == "Date") { datetime = headerCollection[h]; } }
                return datetime;
            }
            catch (Exception) { return datetime; }
            finally
            {
                if (request != null)
                { request.Abort(); }
                if (response != null)
                { response.Close(); }
                if (headerCollection != null)
                { headerCollection.Clear(); }
            }
        }



        private void timer_tick(object sender, EventArgs e)
        {

            // Debug.WriteLine("1s");
            label_date.Text = DateTime.Now.ToString("F")+" "+DateTime.Now.ToString("fff");

            label_dateNet.Text = DateTime.Now.ToString("F"); // +" " + DateTime.Now.ToString("fff");
        }

        private void formClosed(object sender, FormClosedEventArgs e)
        {
            timer.Stop();
            timer1.Stop();
        }

        private void button_Click(object sender, EventArgs e)
        {
            DateTime dt = getWebTime();

            SetDate(dt);
            string str = dt.ToString("F");// +" " + dt.ToString("fff");

            Debug.WriteLine(str);

            label_dateNet.Text = str;
        }


        private struct SYSTEMTIME
        {
            public short year;
            public short month;
            public short dayOfWeek;
            public short day;
            public short hour;
            public short minute;
            public short second;
            public short milliseconds;
        }
        [DllImport("kernel32.dll")]
        private static extern bool SetLocalTime(ref SYSTEMTIME time);
        /// 
        /// 设置系统时间
        /// 
        /// 需要设置的时间
        /// 返回系统时间设置状态,true为成功,false为失败
        public static bool SetDate(DateTime dt)
        {
            SYSTEMTIME st;

            st.year = (short)dt.Year;
            st.month = (short)dt.Month;
            st.dayOfWeek = (short)dt.DayOfWeek;
            st.day = (short)dt.Day;
            st.hour = (short)dt.Hour;
            st.minute = (short)dt.Minute;
            st.second = (short)dt.Second;
            st.milliseconds = (short)dt.Millisecond;
            bool rt = SetLocalTime(ref st);
            return rt;
        }

        private void checkBoxClick(object sender, EventArgs e)
        {
            Debug.WriteLine("自动"+checkBox1.Checked);
            if (checkBox1.Checked == true)
            {
                timer1.Start();
                button1.Enabled = false;
            }
            else
            {
                timer1.Stop();
                button1.Enabled = true;
            }

        }

        private void timer1_tick(object sender, EventArgs e)
        {
            Debug.WriteLine("自动更新");
            button_Click(null,null);
        }


        #region  利用窗体上的控件移动窗体
        /// 
        /// 利用控件移动窗体
        /// 
        /// 窗体
        /// 控件的移动事件
        public void FrmMove(Form Frm, MouseEventArgs e)  //Form或MouseEventArgs添加命名空间using System.Windows.Forms;
        {
            if (e.Button == MouseButtons.Left)
            {
                Point myPosittion = Control.MousePosition;//获取当前鼠标的屏幕坐标
                myPosittion.Offset(CPoint.X, CPoint.Y);//重载当前鼠标的位置
                Frm.DesktopLocation = myPosittion;//设置当前窗体在屏幕上的位置
                Tem_place = 0;
                this.Height = FrmHeight;
            }
        }
        #endregion

        private void panelMouseDown(object sender, MouseEventArgs e)
        {
            CPoint = new Point(-e.X, -e.Y);
            Debug.WriteLine("mouse down:" + -e.X + " " + -e.Y);
        }


        private void panelMouseMove(object sender, MouseEventArgs e)
        {
            FrmMove(this, e);
        }
        private void mouseMove(object sender, MouseEventArgs e)
        {
            Debug.WriteLine(sender.ToString() +"mouse move:");
            
            PictureBox pictureBox = (PictureBox)sender;

            if (pictureBox.Name == "pictureBoxClose")
            {
                pictureBoxClose.BackgroundImage = global::WindowsFormsTimer.Properties.Resources.close_32px_leave;
            }
        }

        private void mouseLeave(object sender, EventArgs e)
        {
            PictureBox pictureBox = (PictureBox)sender;

            if (pictureBox.Name == "pictureBoxClose")
            {
                pictureBoxClose.BackgroundImage = global::WindowsFormsTimer.Properties.Resources.close_32px;
            }

        }

        private void pictureBox_Click(object sender, EventArgs e)
        {
            PictureBox pictureBox = (PictureBox)sender;
            if (pictureBox.Name == "pictureBoxClose")
            {
                //this.Close();   //只是关闭当前窗口,若不是主窗体的话,是无法退出程序的,另外若有托管线程(非主线程),也无法干净地退出;\
                Application.Exit();  //强制所有消息中止,退出所有的窗体,但是若有托管线程(非主线程),也无法干净地退出;
                //Application.ExitThread(); //强制中止调用线程上的所有消息,同样面临其它线程无法正确退出的问题;
                //System.Environment.Exit(0);   //这是最彻底的退出方式,不管什么线程都被强制退出,把程序结束的很干净。  强烈推荐
            }
            else if (pictureBox.Name == "pictureBoxLock")
            {
                this.TopMost = !this.TopMost;
                if (this.TopMost == true)
                {
                    pictureBoxLock.BackgroundImage = global::WindowsFormsTimer.Properties.Resources.lock_32px;
                }
                else
                {
                    pictureBoxLock.BackgroundImage = global::WindowsFormsTimer.Properties.Resources.unlock_32px;
                }
            }
        }

    }
}

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