NameValueCollection qscoll = HttpUtility.ParseQueryString("http://item.taobao.com/item.htm?id=15692320037&ali_refid=a3_420999_1007:1102857363:7:bfa050d3f458644d909956929743f117:90fa5a98c7b8bfc8a311cfe2dd088e4c&ali_trackid=1_90fa5a98c7b8bfc8a311cfe2dd088e4c&spm=874.123733.232738.14");

    // Iterate through the collection.
    StringBuilder sb = new StringBuilder("<br />");
    foreach (String s in qscoll.AllKeys)
    {
      sb.Append(s + " - " + qscoll[s] + "<br />");
    }