Usage:
 extract(textBox1.Text, textBox2.Text, 1); //returns the username
 extract(textBox1.Text, textBox2.Text, 2); //returns the password

        private string getBetween(string strSource, string strStart, string strEnd)
            {
                int Start, End;
                if (strSource.Contains(strStart) && strSource.Contains(strEnd))
                {
                    Start = strSource.IndexOf(strStart, 0) + strStart.Length;
                    End = strSource.IndexOf(strEnd, Start);
                    return strSource.Substring(Start, End - Start);
                }
                else
                {
                    return "";
                }
            }
        private string extract(String input, String format, int param)
        {
            try
            {
                String[] paramSplit;
                String username, password;
                paramSplit = System.Text.RegularExpressions.Regex.Split(format, "{#param#}");
                username = getBetween(input, paramSplit[0], paramSplit[1]);
                password = input;
                password = password.Replace(username, null);
                for (int i = 0; i < paramSplit.Count(); i++)
                {
                    if (paramSplit[i].Length != 0)
                    {
                        password = password.Replace(paramSplit[i], null);
                    }
                }
                String[] result = { username, password };
                if (param == 1) { return result[0]; }
                else
                    if (param == 2) { return result[1]; }
                    else
                        return "Invalid Parameter";
            }
            catch (Exception ex)
            {
                return "Error";
            }
        }