internal string GetOrganizationCode()
        {
            string generatedCode = "";

            int code = randomCode.Next(1000, 10000);

            generatedCode = "C" + code.ToString();

            List <Organization> listOfOrganizationCode = organizationDal.GetAllCode();

            if (listOfOrganizationCode != null)
            {
                foreach (var organization in listOfOrganizationCode)
                {
                    if (generatedCode == organization.Code)
                    {
                        return(GetOrganizationCode());
                    }
                }
            }
            return(generatedCode);
        }