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C#同步網(wǎng)絡(luò)時(shí)間的方法實(shí)例詳解

 更新時(shí)間:2015年05月04日 10:24:24   作者:劉水鏡  
這篇文章主要介紹了C#同步網(wǎng)絡(luò)時(shí)間的方法,以實(shí)例形式較為詳細(xì)的分析了C#獲取網(wǎng)絡(luò)時(shí)間與同步本機(jī)系統(tǒng)時(shí)間的相關(guān)技巧,非常具有實(shí)用價(jià)值,需要的朋友可以參考下

本文實(shí)例講述了C#同步網(wǎng)絡(luò)時(shí)間的方法。分享給大家供大家參考。具體分析如下:

客戶的機(jī)器的系統(tǒng)時(shí)間經(jīng)常出錯(cuò),導(dǎo)致給他們做的軟件無(wú)法正常使用,所以后來(lái)就加了一個(gè)同步網(wǎng)絡(luò)時(shí)間的小功能。實(shí)現(xiàn)起來(lái)很簡(jiǎn)單,但是卻很使用。

這個(gè)小功能就是先獲取網(wǎng)絡(luò)時(shí)間,然后將系統(tǒng)的時(shí)間修改成從網(wǎng)絡(luò)獲得的時(shí)間。下面是具體的實(shí)現(xiàn):

獲取網(wǎng)絡(luò)時(shí)間:

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; 
 /// <summary> 
 /// 網(wǎng)絡(luò)時(shí)間 
 /// </summary> 
 public class NetTime
 {
  /// <summary> 
  /// 獲取標(biāo)準(zhǔn)北京時(shí)間,讀取http://www.beijing-time.org/time.asp 
  /// </summary> 
  /// <returns>返回網(wǎng)絡(luò)時(shí)間</returns> 
  public DateTime GetBeijingTime()
  {
   DateTime dt;
   WebRequest wrt = null;
   WebResponse wrp = null;
   try
   {
    wrt = WebRequest.Create("http://www.beijing-time.org/time.asp");
    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("\r\n", "");
    }
    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;
  }
}

獲取網(wǎng)絡(luò)時(shí)間,返回一個(gè)DateTime對(duì)象,然后傳給設(shè)置系統(tǒng)時(shí)間的方法,修改系統(tǒng)時(shí)間。

同步系統(tǒng)時(shí)間:

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; 
 /// <summary>
 /// 更新系統(tǒng)時(shí)間
 /// </summary>
 public class UpdateTime
 {
  //設(shè)置系統(tǒng)時(shí)間的API函數(shù)
  [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;
  }
  /// <summary>
  /// 設(shè)置系統(tǒng)時(shí)間
  /// </summary>
  /// <param name="dt">需要設(shè)置的時(shí)間</param>
  /// <returns>返回系統(tǒng)時(shí)間設(shè)置狀態(tài),true為成功,false為失敗</returns>
  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;
  }
}

兩個(gè)方法分別寫(xiě)在了兩個(gè)類里面,只需要在客戶端實(shí)例化兩個(gè)對(duì)象,然后依次調(diào)用其方法即可,簡(jiǎn)單實(shí)用。

希望本文所述對(duì)大家的C#程序設(shè)計(jì)有所幫助。

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