public int AddEmployee(EmployeeModel model)
        {
            using (var context = new Database2Entities())
            {
                EmployeeTable emp = new EmployeeTable()
                {
                    FirstName = model.FirstName,
                    LastName  = model.LastName,
                    Email     = model.Email,
                    Code      = model.Code
                };
                context.EmployeeTable.Add(emp);

                context.SaveChanges();

                return(emp.Id);
            }
        }