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本文实例讲述了C#实现从网络同步标准北京时间的方法。分享给大家供大家参考。具体分析如下：
这段C#代码可以从http://www.time.ac.cn网站上获取标准的北京时间，只需简单的组合即可让本地服务器实时同步正确的北京时间
#region/// <summary>/// 获取标准北京时间/// /// </summary>/// /// <returns></returns>///public static DateTime GetStandardTime() {/// //<?xml version="1.0" encoding="GB2312" ?>//- <ntsc>//- <time>// <year>2013</year>// <month>8</month>// <day>29</day> // <Weekday /> // <hour>16</hour>// <minite>29</minite>// <second>12</second> // <Millisecond />// </time> // </ntsc> DateTime dt;WebRequest wrt = null;WebResponse wrp = null;try{wrt = WebRequest.Create("http://www.time.ac.cn/timeflash.asp?user=flash"); wrt.Credentials = CredentialCache.DefaultCredentials; wrp = wrt.GetResponse(); StreamReader sr = new StreamReader(wrp.GetResponseStream(),Encoding.UTF8); string html = sr.ReadToEnd(); sr.Close(); wrp.Close(); int yearIndex = html.IndexOf("<year>") + 6; int monthIndex = html.IndexOf("<month>") + 7; int dayIndex = html.IndexOf("<day>") + 5; int hourIndex = html.IndexOf("<hour>") + 6; int miniteIndex = html.IndexOf("<minite>") + 8; int secondIndex = html.IndexOf("<second>") + 8; string year = html.Substring(yearIndex, html.IndexOf("</year>") - yearIndex); string month = html.Substring(monthIndex, html.IndexOf("</month>") - monthIndex); string day = html.Substring(dayIndex, html.IndexOf("</day>") - dayIndex); string hour = html.Substring(hourIndex, html.IndexOf("</hour>") - hourIndex); string minite = html.Substring(miniteIndex, html.IndexOf("</minite>") - miniteIndex); string second = html.Substring(secondIndex, html.IndexOf("</second>") - secondIndex); dt = DateTime.Parse(year + "-" + month + "-" + day + " " + hour + ":" + minite + ":" + second);}catch (WebException){ return DateTime.Parse("2013-1-1");}catch (Exception){ return DateTime.Parse("2013-1-1");}finally{ if (wrp != null) wrp.Close(); if (wrt != null) wrt.Abort();} return dt; }#endregion希望本文所述对大家的C#程序设计有所帮助。
