asp.net实现识别客户端浏览器或操作系统

protected void Page_Load(object sender, EventArgs e)  {    //验证终端    string agent = Request.Headers["User-Agent"];    if (choose_net(agent))    {      Response.Redirect("/mobile/");    }  }  //验证终端  public bool choose_net(String userAgent)  {    if (userAgent.IndexOf("Noki") > -1 || // Nokia phones and emulators           userAgent.IndexOf("Eric") > -1 || // Ericsson WAP phones and emulators           userAgent.IndexOf("WapI") > -1 || // Ericsson WapIDE 2.0           userAgent.IndexOf("MC21") > -1 || // Ericsson MC218           userAgent.IndexOf("AUR") > -1 || // Ericsson R320           userAgent.IndexOf("R380") > -1 || // Ericsson R380           userAgent.IndexOf("UP.B") > -1 || // UP.Browser           userAgent.IndexOf("WinW") > -1 || // WinWAP browser           userAgent.IndexOf("UPG1") > -1 || // UP.SDK 4.0           userAgent.IndexOf("upsi") > -1 || //another kind of UP.Browser           userAgent.IndexOf("QWAP") > -1 || // unknown QWAPPER browser           userAgent.IndexOf("Jigs") > -1 || // unknown JigSaw browser           userAgent.IndexOf("Java") > -1 || // unknown Java based browser           userAgent.IndexOf("Alca") > -1 || // unknown Alcatel-BE3 browser (UP based)             userAgent.IndexOf("MITS") > -1 || // unknown Mitsubishi browser           userAgent.IndexOf("MOT-") > -1 || // unknown browser (UP based)           userAgent.IndexOf("My S") > -1 ||// unknown Ericsson devkit browser            userAgent.IndexOf("WAPJ") > -1 ||//Virtual WAPJAG www.wapjag.de           userAgent.IndexOf("fetc") > -1 ||//fetchpage.cgi Perl script from www.wapcab.de            userAgent.IndexOf("ALAV") > -1 || //yet another unknown UP based browser           userAgent.IndexOf("Wapa") > -1 || //another unknown browser (Web based "Wapalyzer")           userAgent.IndexOf("UCWEB") > -1 || //another unknown browser (Web based "Wapalyzer")           userAgent.IndexOf("BlackBerry") > -1 || //another unknown browser (Web based "Wapalyzer")                   userAgent.IndexOf("J2ME") > -1 || //another unknown browser (Web based "Wapalyzer")                userAgent.IndexOf("Oper") > -1 ||         userAgent.IndexOf("Android") > -1 ||      userAgent.IndexOf("mozilla") > -1)    {      return true;    }    else    {      return false;    }  }

<script type="text/javascript">    var bro = navigator.userAgent;    //alert(bro);    // alert(bro.indexOf("Windows Phone"));    // iPad 浏览器navigator.userAgent（包含iPad）    if (bro.indexOf("NetFront") > 0 || bro.indexOf("UCWEB") > 0      || bro.indexOf("iPhone") > 0 || bro.indexOf("Windows CE") > 0      || bro.indexOf("MIDP-2.0") > 0 || bro.indexOf("Android") > 0      || bro.indexOf("Opera Mini") > 0 || bro.indexOf("SymbianOS") > 0      || bro.indexOf("Windows Phone") > 0) {      window.open("Wap1/Index.aspx", "_top");    }    //    else if (bro.indexOf("Windows NT") > 0) {    //      window.open("NewWeb/default.html", "_top");    //    }        else {          window.open("NewWeb/default.html", "_top");        }  </script>

/// <summary>/// 获取操作系统的名字/// </summary>/// <param name="userAgent"></param>/// <returns></returns>private string GetOSNameByUserAgent(string userAgent){	string osVersion = "未知"; 	if (userAgent.Contains("NT 10.0"))	{		osVersion = "Windows 10";	}	else if (userAgent.Contains("NT 6.3"))	{		osVersion = "Windows 8.1";	}	else if (userAgent.Contains("NT 6.2"))	{		osVersion = "Windows 8";	}	else if (userAgent.Contains("NT 6.1"))	{		osVersion = "Windows 7";	}	else if (userAgent.Contains("NT 6.1"))	{		osVersion = "Windows 7";	}	else if (userAgent.Contains("NT 6.0"))	{		osVersion = "Windows Vista/Server 2008";	}	else if (userAgent.Contains("NT 5.2"))	{		if (userAgent.Contains("64"))			osVersion = "Windows XP";		else			osVersion = "Windows Server 2003";	}	else if (userAgent.Contains("NT 5.1"))	{		osVersion = "Windows XP";	}	else if (userAgent.Contains("NT 5"))	{		osVersion = "Windows 2000";	}	else if (userAgent.Contains("NT 4"))	{		osVersion = "Windows NT4";	}	else if (userAgent.Contains("Me"))	{		osVersion = "Windows Me";	}	else if (userAgent.Contains("98"))	{		osVersion = "Windows 98";	}	else if (userAgent.Contains("95"))	{		osVersion = "Windows 95";	}	else if (userAgent.Contains("Mac"))	{		osVersion = "Mac";	}	else if (userAgent.Contains("Unix"))	{		osVersion = "UNIX";	}	else if (userAgent.Contains("Linux"))	{		osVersion = "Linux";	}	else if (userAgent.Contains("SunOS"))	{		osVersion = "SunOS";	}	else	{		osVersion = HttpContext.Current.Request.Browser.Platform;	}	return osVersion;}