ASP.NET获取客户端IP地址、系统版本、浏览器版本

转自： http://blog.sina.com.cn/s/blog_40d62aad0100hjic.html
//获取浏览器版本号
public string getBrowser() {
string browsers;
HttpBrowserCapabilities bc = HttpContext.Current.Request.Browser;
string aa = bc.Browser.ToString();
string bb = bc.Version.ToString();
browsers = aa + bb;
return browsers;
}
//获取客户端IP地址
public string getIP()
{
string result = String.Empty;
result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (null == result || result == String.Empty)
{
result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}
if (null == result || result == String.Empty)
{
result = HttpContext.Current.Request.UserHostAddress;
}
if (null == result || result == String.Empty)
{
return "0.0.0.0";
}
return result;
}
//获取操作系统版本号
public static string SystemCheck()
{
string Agent = HttpContext.Current.Request.ServerVariables["HTTP_USER_AGENT"];

if (Agent.IndexOf("NT 4.0") > 0)
{
return "Windows NT ";
}
else if (Agent.IndexOf("NT 5.0") > 0)
{
return "Windows 2000";
}
else if (Agent.IndexOf("NT 5.1") > 0)
{
return "Windows XP";
}
else if (Agent.IndexOf("NT 5.2") > 0)
{
return "Windows 2003";
}
else if (Agent.IndexOf("NT 6.0") > 0)
{
return "Windows Vista";
}
else if (Agent.IndexOf("WindowsCE") > 0)
{
return "Windows CE";
}
else if (Agent.IndexOf("NT") > 0)
{
return "Windows NT ";
}
else if (Agent.IndexOf("9x") > 0)
{
return "Windows ME";
}
else if (Agent.IndexOf("98") > 0)
{
return "Windows 98";
}
else if (Agent.IndexOf("95") > 0)
{
return "Windows 95";
}
else if (Agent.IndexOf("Win32") > 0)
{
return "Win32";
}
else if (Agent.IndexOf("Linux") > 0)
{
return "Linux";
}
else if (Agent.IndexOf("SunOS") > 0)
{
return "SunOS";
}
else if (Agent.IndexOf("Mac") > 0)
{
return "Mac";
}
else if (Agent.IndexOf("Linux") > 0)
{
return "Linux";
}
else if (Agent.IndexOf("Windows") > 0)
{
return "Windows";
}
return "未知类型";

}