public ActionResult <ApiResponse> Get(string code, string password)
        {
            //studentCode and profCode are numeric string
            //employeeCode is string not numeric

            var trimedCode = code.Trim();
            var trimedPass = password.Trim();

            double inputCode;
            var    isNum_Prof_Stu_Code = double.TryParse(trimedCode, out inputCode);

            if (isNum_Prof_Stu_Code)
            {
                var studentRepo = new StudentRepository();
                var fsfStudent  = studentRepo.Select(trimedCode);
                if (fsfStudent != null)
                {
                    var checkPassword = studentRepo.CheckPassword(trimedCode, trimedPass);

                    if (checkPassword)
                    {
                        fsfStudent.ObjectType = Helper.ObjectType.Student;
                        return(new ApiResponse
                        {
                            ErrorId = (int)Helper.ApiOutputError.NoError,
                            ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.NoError).ToString(),
                            Result = fsfStudent
                        });
                    }
                    else
                    {
                        return(new ApiResponse
                        {
                            ErrorId = (int)Helper.ApiOutputError.InCorrectPassword,
                            ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.InCorrectPassword).ToString()
                        });
                    }
                }
                else
                {
                    var fNewStudent = studentRepo.Select(trimedCode, false, true);
                    if (fNewStudent != null)
                    {
                        if (string.Compare(trimedPass, fNewStudent.NationalCode) == 0)
                        {
                            fNewStudent.ObjectType = Helper.ObjectType.Student;
                            return(new ApiResponse
                            {
                                ErrorId = (int)Helper.ApiOutputError.NoError,
                                ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.NoError).ToString(),
                                Result = fNewStudent
                            });
                        }
                        else
                        {
                            return(new ApiResponse
                            {
                                ErrorId = (int)Helper.ApiOutputError.InCorrectPassword,
                                ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.InCorrectPassword).ToString()
                            });
                        }
                    }
                }

                //======================================================
                var professorRepo = new ProfessorRepository();
                var professor     = professorRepo.Select(trimedCode);
                if (professor != null)
                {
                    var checkPassword = professorRepo.CheckPassword(trimedCode, trimedPass);

                    if (checkPassword)
                    {
                        professor.ObjectType = Helper.ObjectType.Professor;
                        return(new ApiResponse
                        {
                            ErrorId = (int)Helper.ApiOutputError.NoError,
                            ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.NoError).ToString(),
                            Result = professor
                        });
                    }
                    else
                    {
                        return(new ApiResponse
                        {
                            ErrorId = (int)Helper.ApiOutputError.InCorrectUserNameOrPassword,
                            ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.InCorrectPassword).ToString()
                        });
                    }
                }
            }
            //#############################################

            var employeeRepository = new EmployeeRepository();
            var employees          = employeeRepository.Select(trimedCode);

            if (employees != null)
            {
                var checkPassword = employeeRepository.CheckPassword(trimedCode, trimedPass);

                if (checkPassword)
                {
                    return(new ApiResponse
                    {
                        ErrorId = (int)Helper.ApiOutputError.NoError,
                        ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.NoError).ToString(),
                        Result = employees
                    });
                }
                else
                {
                    return(new ApiResponse
                    {
                        ErrorId = (int)Helper.ApiOutputError.InCorrectPassword,
                        ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.InCorrectPassword).ToString()
                    });
                }
            }
            //#############################################
            return(new ApiResponse
            {
                ErrorId = (int)Helper.ApiOutputError.NotExists,
                ErrorTitle = ((Helper.ApiOutputError)Helper.ApiOutputError.NotExists).ToString(),
                Result = "default"
            });
        }