HttpContext

获取客户端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"];