做工程过程，将做工程过程经常用的内容做个收藏，下面内容内容是关于 C#同步网络时间和本地时间的内容，希望对各位朋友有较大用途。

using System;

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

public class NetTime{    public DateTime GetBeijingTime()    {        DateTime dt;        WebRequest wrt = null;        WebResponse wrp = null;        try        {            wrp = wrt.GetResponse();            string html = string.Empty;            using (Stream stream = wrp.GetResponseStream())            {                using (StreamReader sr = new StreamReader(stream, Encoding.UTF8))                {                    html = sr.ReadToEnd();                }            }            string[] tempArray = html.Split(';');            for (int i = 0; i < tempArray.Length; i++)            {                tempArray[i] = tempArray[i].Replace("rn", "");            }            string year = tempArray[1].Split('=')[1];            string month = tempArray[2].Split('=')[1];            string day = tempArray[3].Split('=')[1];            string hour = tempArray[5].Split('=')[1];            string minite = tempArray[6].Split('=')[1];            string second = tempArray[7].Split('=')[1];            dt = DateTime.Parse(year + "-" + month + "-" + day + " " + hour + ":" + minite + ":" + second);        }        catch (WebException)        {            return DateTime.Parse("2011-1-1");        }        catch (Exception)        {            return DateTime.Parse("2011-1-1");        }        finally        {            if (wrp != null)                wrp.Close();            if (wrt != null)                wrt.Abort();        }        return dt;    }}

获取网络时间，返回一个DateTime对象，然后传给设置系统时间的方法，修改系统时间。同步系统时间：

using System;

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

public class UpdateTime{    [DllImport("kernel32.dll")]    private static extern bool SetLocalTime(ref SYSTEMTIME time);    [StructLayout(LayoutKind.Sequential)]    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;    }    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;    }}

两个方法分别写在了两个类里面，只需要在客户端实例化两个对象，然后依次调用其方法即可，简单实用。