private void SingleSignonCode(string ClinicKey, string UserID, out string SingleSignOnCode, out string SingleSignOnUserIdVerify, bool IsUrlEncoding)
    {
        string id = string.Format("Id: {0} Uri: {1}", Guid.NewGuid(), HttpContext.Current.Request.Url);

        using (Utils utility = new Utils())
        {
            utility.MethodStart(id, System.Reflection.MethodBase.GetCurrentMethod());
        }
        string base64String;

        SingleSignOnCode         = "";
        SingleSignOnUserIdVerify = "";
        string str = EncryptionCommon.CreatePhrase();

        byte[]        bytes         = EncodingUtility.GetBytes(string.Concat(str, this.Key), EncodingUtility.encodingOptions.UTF8);
        SHA512Managed sHA512Managed = new SHA512Managed();

        try
        {
            base64String = Convert.ToBase64String(sHA512Managed.ComputeHash(bytes));
        }

        finally
        {
            if (sHA512Managed != null)
            {
                ((IDisposable)sHA512Managed).Dispose();
            }
        }
        if (base64String.Substring(base64String.Length - 2, 2).Equals("=="))
        {
            base64String = base64String.Substring(0, base64String.Length - 2);
        }
        SingleSignOnCode         = (IsUrlEncoding ? HttpUtility.UrlEncode(string.Concat(str, base64String)) : string.Concat(str, base64String));
        base64String             = "";
        SingleSignOnUserIdVerify = string.Concat(UserID, str.Substring(0, 22), this.Key);
        bytes         = EncodingUtility.GetBytes(SingleSignOnUserIdVerify, EncodingUtility.encodingOptions.UTF8);
        sHA512Managed = new SHA512Managed();
        try
        {
            base64String = Convert.ToBase64String(sHA512Managed.ComputeHash(bytes));
        }
        finally
        {
            if (sHA512Managed != null)
            {
                ((IDisposable)sHA512Managed).Dispose();
            }
        }
        if (base64String.Substring(base64String.Length - 2, 2).Equals("=="))
        {
            base64String = base64String.Substring(0, base64String.Length - 2);
        }
        SingleSignOnUserIdVerify = (IsUrlEncoding ? HttpUtility.UrlEncode(base64String) : base64String);
    }