RatioMaster_source.RM.HashUrlEncode C# (CSharp) Method

        internal string HashUrlEncode(string decoded, bool upperCase)
        {
            StringBuilder ret = new StringBuilder();
            RandomStringGenerator stringGen = new RandomStringGenerator();
            try
            {
                for (int i = 0; i < decoded.Length; i = i + 2)
                {
                    char tempChar;

                    // the only case in which something should not be escaped, is when it is alphanum,
                    // or it's in marks
                    // in all other cases, encode it.
                    tempChar = (char)Convert.ToUInt16(decoded.Substring(i, 2), 16);
                    ret.Append(tempChar);
                }
            }
            catch (Exception ex)
            {
                AddLogLine(ex.ToString());
            }

            return stringGen.Generate(ret.ToString(), upperCase);
        }