///

        ///   url  ，      
        /// 
        /// url  
        /// 
        /// 
        public static System.Collections.Specialized.NameValueCollection ParseUrl(string url, out string baseUrl)
        {
            baseUrl = "";
            if (string.IsNullOrEmpty(url))
                return null;
            System.Collections.Specialized.NameValueCollection nvc = new System.Collections.Specialized.NameValueCollection();

            try
            {
                int questionMarkIndex = url.IndexOf('?');

                if (questionMarkIndex == -1)
                    baseUrl = url;
                else
                    baseUrl = url.Substring(0, questionMarkIndex);
                if (questionMarkIndex == url.Length - 1)
                    return null;
                string ps = url.Substring(questionMarkIndex + 1);

                //           
                System.Text.RegularExpressions.Regex re = new System.Text.RegularExpressions.Regex(@"(^|&)?(\w+)=([^&]+)(&|$)?", System.Text.RegularExpressions.RegexOptions.Compiled);
                System.Text.RegularExpressions.MatchCollection mc = re.Matches(ps);

                foreach (System.Text.RegularExpressions.Match m in mc)
                {
                    nvc.Add(m.Result("$2").ToLower(), m.Result("$3"));
                }

            }
            catch { }
            return nvc;
        }

  public static void Main(string[] args)
        {            

            var str =
                "https://aa.com/pages/shopdetail/shopdetail?EnclosureId=null&Title=          &ProductId=1";
            var aa = ParseUrl(str, out str);

            Console.WriteLine("1:"+aa["EnclosureId"]);
            Console.WriteLine("2:" + aa["Title"]);
            Console.WriteLine("3:" + aa["ProductId"]);
        }

이 방법을 반복해서 사용해서 Url의 인자를 가져오지 마십시오.