private void Button_Add_Room_Click(object sender, EventArgs e)
        {
            TableTypes.Room room = new TableTypes.Room();
            room.Hotel_ID         = Int32.Parse(Hotel_id.Text);
            room.Room_Id          = Int32.Parse(Hotel_Room_ID.Text);
            room.Room_Type        = Hotel_Room_Type.Text;
            room.Room_Description = Hotel_Description.Text;
            AdminHotelListManipulationClass HMInstance = new AdminHotelListManipulationClass();
            string log = HMInstance.AddRoomsToHotel(room);

            MessageBox.Show(log);
        }
        private void Button_Add_Hotel_Click(object sender, EventArgs e)
        {
            TableTypes.Hotel hotel = new TableTypes.Hotel();
            hotel.Addr      = Hotel_Address.Text;
            hotel.City      = Hotel_City.Text;
            hotel.Hotel_Id  = Int32.Parse(Hotel_id.Text);
            hotel.Phone_Num = Int32.Parse(Hotel_Phone_Num.Text);
            hotel.Name      = Hotel_Name.Text;
            AdminHotelListManipulationClass HMInstance = new AdminHotelListManipulationClass();
            string log = HMInstance.addHotel(hotel);

            MessageBox.Show(log);
        }
        private void Button_Add_HotelEmp_Click(object sender, EventArgs e)
        {
            UserTypes.Employee Emp = new UserTypes.Employee();
            Emp.Addr          = Hotel_Staff_Address.Text;
            Emp.Date_Of_Birth = Hotel_Staff_DOB.Text;
            Emp.Email         = Hotel_Staff_EmailAddresss.Text;
            Emp.First_Name    = Hotel_Staff_First_Name.Text;
            Emp.Last_name     = Hotel_Staff_LastName.Text;
            Emp.Hotel_ID      = Int32.Parse(Hotel_id.Text);
            Emp.Staff_Id      = Int32.Parse(Hotel_Staff_ID.Text);
            Emp.Phone_Num     = Int32.Parse(Hotel_Staff_PhoneNum.Text);
            AdminHotelListManipulationClass HMInstance = new AdminHotelListManipulationClass();
            string log = HMInstance.AddEmployeesToHotel(Emp);

            MessageBox.Show(log);
        }