ApiCore.ApiQueryBuilder.BuildQuery C# (CSharp) Method

        public string BuildQuery()
        {
            StringBuilder sb = new StringBuilder("http://api.vkontakte.ru/api.php?");

            this.Add("v", "3.0");
            // sorting params
            List<KeyValuePair<string, string>> myList = new List<KeyValuePair<string, string>>(this.paramData);
            myList.Sort(
                delegate(KeyValuePair<string, string> keyfirst,
                KeyValuePair<string, string> keylast)
                {
                    return keyfirst.Key.CompareTo(keylast.Key);
                }
            );

            StringBuilder md5sig = new StringBuilder(this.session.MemberId);
            foreach (KeyValuePair<string, string> rec in myList)
            {
                md5sig.Append(rec.Key + "=" + rec.Value);
                sb.Append(rec.Key + "=" + rec.Value + "&");
            }

            md5sig.Append(this.session.Secret);
            sb.Append("sig=" + CommonUtils.Md5(md5sig.ToString()).ToLower());
            sb.Append("&sid=" + this.session.SessionId);
            //sb.Append(
            return sb.ToString();//this.query;
        }