获取来源页面的页面

string user_IP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_REFERER"];

//页面的url
string nowUrl = HttpContext.Current.Request.Url.ToString();

//获得客户端的IP
string result = String.Empty;

result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
        if (string.IsNullOrEmpty(result))
        {
            result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
        }

        if (string.IsNullOrEmpty(result))
        {
            result = HttpContext.Current.Request.UserHostAddress;
        }

        if (null == result || result == String.Empty)
        {
            result = HttpContext.Current.Request.UserHostAddress;

        }

服务器发送string user_IP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_REFERER"];