public Dictionary <string, string> GetEmployeeIds() { Dictionary <string, string> employeeIds = new Dictionary <string, string>(); List <ISalesman> salesmans = _salesmanService.GetAllSalesmans(); List <IAccountant> accountants = _accountantService.GetAllAccountants(); foreach (var salesman in salesmans) { employeeIds.Add(salesman.SalesmanId, "Salesman"); } foreach (var accountant in accountants) { employeeIds.Add(accountant.AccountantId, "Accountant"); } return(employeeIds); }