asp.net获取IP地址

//方法一 HttpContext.Current.Request.UserHostAddress;

//方法二 HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

//方法三 string strHostName = System.Net.Dns.GetHostName(); string clientIPAddress = System.Net.Dns.GetHostAddresses(strHostName).GetValue(0).ToString();

//方法四（无视代理） HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];