var clientIpAddress = System.Web.HttpContext.Current.Request.Headers["X-Forwarded-For"] ?? System.Web.HttpContext.Current.Request.UserHostAddress;
string[] stringSeparators = new string[] { "," };
string[] Ip = clientIpAddress.Split(stringSeparators, StringSplitOptions.None);bu dizi içerisinden alabilirsin. kolay gelsin