获取登录IP

1 /// <summary>
2 /// 获取登录IP
3 /// </summary>
4 /// <returns></returns>
5         private string GetIP()
6         {
7             string l_ret = string.Empty;
8             if (!string.IsNullOrEmpty(System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"]))
9                 l_ret = Convert.ToString(System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]);
10             if (string.IsNullOrEmpty(l_ret))
11                 l_ret = Convert.ToString(System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]);
12             return l_ret;
13         }