首先是简单的asp mvc网站代码 [英] simple asp mvc web site code first

问题描述

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公共课程预订 

    {

$
        [Key]

        public int ReservationID {get;组; }¥b $ b        [必填]

        [StringLength（50，ErrorMessage =" {0}必须至少{2}个字符长"，MinimumLength = 3）]¥b $ b        [显示（姓名="客户名称）]]¥b $ b        public string CustomerName {get;组; }¥b $ b        [范围（000000001，int.MaxValue，ErrorMessage ="客户护照必须为正数）"）
        public int CustomerPassport {get;组; }¥b $ b        [EmailAddress] [显示（姓名="电子邮件"）]

        public string CustomerEmail {get;组; }




        [DataType（DataType.Date）]
$


       公共日期时间？ BirthDate {get;组; }




        [DataType（DataType.Date）]

        [EntranceDate]

        [DateGreaterThan（" LeaveDate"）]
$


       公共日期时间？ EntranceDate {get;组; }     

        [DataType（DataType.Date）]
$


        public DateTime LeaveDate {get;组; }¥b $ b        public string HotelName {get;组; }


    }

公共类城市

    {

        [Key]

        public int CityID {get;组; }¥b $ b        [必需] [StringLength（50，ErrorMessage =" {0}必须至少{2}个字符。"，MinimumLength = 3）]

        [显示（姓名="城市名称）] 

  &NBSP; &NBSP; &NBSP; public string CityName {get;组; }¥b $ b  &NBSP; &NBSP; &NBSP; public virtual ICollection< Hotels>酒店{get;组; }¥b $ b  &NBSP; }

 公共舱酒店

  &NBSP; {

  &NBSP; &NBSP; &NBSP; [Key]

  &NBSP; &NBSP; &NBSP; public int HotelID {get;组; }¥b $ b  &NBSP; &NBSP; &NBSP; [必填]

  &NBSP; &NBSP; &NBSP; [StringLength（50，ErrorMessage =" {0}必须至少{2}个字符。"，MinimumLength = 3）]

  &NBSP; &NBSP; &NBSP; public string HotelName {get;组; }¥b $ b  &NBSP; &NBSP; &NBSP; public  string CityName {get;组; }¥b $ b  &NBSP; &NBSP; &NBSP;公共虚拟ICollection< Reservations>预订{get;组; }  

  &NBSP; }

公共类TravelContext：DbContext

  &NBSP; {

  &NBSP; &NBSP; &NBSP; public TravelContext（）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; ：base（"TravelContext"）

  &NBSP; &NBSP; &NBSP; {

$
  &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP;   public DbSet< Cities>城市{get; set;}

  &NBSP; &NBSP;   public DbSet< Hotels>酒店{get;组; }¥b $ b  &NBSP; &NBSP;   public  DbSet< Reservations>预订{get;组; }




  &NBSP; }

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;

 公共类TravelDbInitializer：DropCreateDatabaseAlways< TravelContext>

  &NBSP; {

  &NBSP; &NBSP; &NBSP; protected override void Seed（TravelContext context）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; base.Seed（context）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;城市city1 =新城市¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName =" London"，


  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;城市city2 =新城市¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName =" Seatle"，


$
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;城市city3 =新城市¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName =" New York"，


  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;城市city4 =新城市¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName =" Manchester"，


  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;酒店hotel1 =新酒店

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; HotelName =" QueenSheeba"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName = city1.CityName



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;酒店hotel2 =新酒店

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; HotelName =" PalmBeach"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName = city2.CityName

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;酒店hotel3 =新酒店

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; HotelName =" DeadSeaResort"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName = city3.CityName

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;酒店hotel4 =新酒店

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; HotelName =" MayamiBeach"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CityName = city4.CityName

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;预订booking1 =新预订

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerName =" Michael Weisberg"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerEmail =" [e-mail]" ;,

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerPassport = 345678，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; HotelName = hotel1.HotelName，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; BirthDate = new DateTime（1986,10,30），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; EntranceDate = new DateTime（2016,12,20），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; LeaveDate = new DateTime（2016,12,25），



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;预订reservation2 =新预订

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerName =" Moshe Yachelson"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerEmail =" [e-mail]"，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerPassport = 123456，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;酒店名称= hotel2.HotelName，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; BirthDate = new DateTime（1988,05,15），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; EntranceDate = new DateTime（2016,09,20），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; LeaveDate = new DateTime（2016,09,23）



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;预订预订3 =新预订

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerName =" John McDonald"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerEmail =" [e-mail]" ;,

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerPassport = 12345，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; HotelName = hotel3.HotelName，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; BirthDate = new DateTime（1990,10,5），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; EntranceDate = new DateTime（2015,12,29），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; LeaveDate = new DateTime（2016,01,01）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;预订预订4 =新预订

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerName =" ElishevaKogan"，
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerEmail =" [e-mail]" ;,

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; CustomerPassport = 45678，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; HotelName = hotel4.HotelName，

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; BirthDate = new DateTime（1980,12,01），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; EntranceDate = new DateTime（2015,11,01），

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; LeaveDate = new DateTime（2015,11,04），



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; };
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Cities.Add（city1）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Cities.Add（city2）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Cities.Add（city3）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Cities.Add（city4）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Hotels.Add（hotel1）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Hotels.Add（hotel2）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Hotels.Add（hotel3）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Hotels.Add（hotel4）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Reservations.Add（reservation1）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Reservations.Add（reservation2）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Reservations.Add（reservation3）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.Reservations.Add（reservation4）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; context.SaveChanges（）;

  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; }

  public class EntranceDateAttribute：ValidationAttribute

  &NBSP; {

$
  &NBSP; &NBSP; &NBSP;公开覆盖bool IsValid（对象值）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; DateTime dateStart =（DateTime）值;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; //会议必须在将来开始。

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return（dateStart> DateTime.Now.AddDays（-1））;

  &NBSP; &NBSP; &NBSP; }




  公共类DateGreaterThanAttribute：ValidationAttribute

  &NBSP; {

$
  &NBSP; &NBSP; &NBSP; public DateGreaterThanAttribute（string dateToCompareToFieldName）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; DateToCompareToFieldName = dateToCompareToFieldName;

  &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP;私有字符串DateToCompareToFieldName {get;组; }


  &NBSP; &NBSP; &NBSP; protected override ValidationResult IsValid（object value，ValidationContext validationContext）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; DateTime earlyDate =（DateTime）值;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; DateTime laterDate =（DateTime）validationContext.ObjectType.GetProperty（DateToCompareToFieldName）.GetValue（validationContext.ObjectInstance，null）;
$


  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（laterDate> earlyDate）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回ValidationResult.Success;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;否则

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回新的ValidationResult（"日期不晚于"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }


  &NBSP; }

 公共类AddNewReservations：预订

  &NBSP; {

  &NBSP; &NBSP; &NBSP; public virtual ICollection< Hotels>酒店{get;组; }¥b $ b  &NBSP; &NBSP; &NBSP; public IEnumerable< SelectListItem> HotelItems

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; get {return new SelectList（Hotels，" HotelName"，" HotelName"）; }¥b $ b  &NBSP; &NBSP; &NBSP; } 

  &NBSP; }

 公共类AddNewHotels：酒店

  &NBSP; {

$
  &NBSP; &NBSP; &NBSP;公共虚拟ICollection< Cities>城市{get;组; }¥b $ b  &NBSP; &NBSP; &NBSP; public IEnumerable< SelectListItem> CityItems

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; get {return new SelectList（Cities，" CityName"，" CityName"）; }¥b $ b  &NBSP; &NBSP; &NBSP; } 

  &NBSP; }

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP;&NBSP; &NBSP;
  

公共类HomeController：控制器

  &NBSP; {

  &NBSP; &NBSP; &NBSP; // GET：首页



  &NBSP; &NBSP; &NBSP;公共ActionResult指数（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（）;

  &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP;公共ViewResult AddHotel（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; AddNewHotels newHotel = new AddNewHotels（）;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var citiesList = db.Cities.ToList（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（citiesList！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   newHotel.Cities = citiesList; 

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;  返回查看（newHotel）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;




  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }




$
  &NBSP; &NBSP; &NBSP; public ViewResult AddCity（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（）;

  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; [HttpPost]

  &NBSP; &NBSP; &NBSP;公共ActionResult AddCity（城市）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（city！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

$


  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var checkCity = db.Cities.Where（x => x.CityName == city.CityName）.FirstOrDefault（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（checkCity == null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; db.Cities.Add（city）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; db.SaveChanges（）; 

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return RedirectToAction（" ShowCities"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP; [HttpPost]

  &NBSP; &NBSP; &NBSP;公共ActionResult AddHotel（AddNewHotels酒店）

  &NBSP; &NBSP; &NBSP; {

$


  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（hotel！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var checkHotel = db.Hotels.Where（x => x.HotelName == hotel.HotelName）.FirstOrDefault（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（checkHotel == null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

$
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; db.Hotels.Add（hotel）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; db.SaveChanges（）; 

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return RedirectToAction（" ShowHotels"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }




  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; public ActionResult AddReservation（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; AddNewReservations newReservation = new AddNewReservations（）;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var hotelsList = db.Hotels.ToList（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（hotelsList！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; newReservation.Hotels = hotelsList;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return View（newReservation）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP; [HttpPost]

  &NBSP; &NBSP; &NBSP; public ActionResult AddReservation（AddNewReservations预订）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（reservation！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   var checkReservation = db.Reservations.Where（x => x.ReservationID == reservation.ReservationID）.FirstOrDefault（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   if（checkReservation == null&& ModelState.IsValid）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; db.Reservations.Add（预订）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; db.SaveChanges（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;  返回RedirectToAction（" ShowReservations"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;  返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP; }




$
  &NBSP; &NBSP; &NBSP;公共ActionResult ShowCities（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var citiesList = db.Cities.ToList< Cities>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（citiesList！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return View（citiesList）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP; public ActionResult ShowHotels（）

  &NBSP; &NBSP; &NBSP; {

$
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var hotels = db.Hotels.ToList< Hotels>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（hotels！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（酒店）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; public ActionResult ShowReservations（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var reservations = db.Reservations.ToList< Reservations>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（预订！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（预订）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回查看（"错误"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }




  &NBSP; &NBSP; &NBSP; public ActionResult SortHotelByCity（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var hotelList = db.Hotels.ToList< Hotels>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（hotelList！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   var newList = hotelList.OrderBy（s => s.CityName）; 

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return View（" ShowHotels"，newList）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回视图（"错误"）;   

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP;公共ActionResult SortHotelByHotel（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var hotelList = db.Hotels.ToList< Hotels>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; if（hotelList！= null）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var newList = hotelList.OrderBy（s => s.HotelName）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return View（" ShowHotels"，newList）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;返回视图（"错误"）;  

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; public ActionResult SortReservationByCustomer（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var reservList = db.Reservations.ToList< Reservations>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var newList = reservList.OrderBy（s => s.CustomerName）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return View（"ShowReservations"，newList）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; public ActionResult SortReservationByHotel（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var reservList = db.Reservations.ToList< Reservations>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var newList = reservList.OrderBy（s => s.HotelName）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return View（"ShowReservations"，newList）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }


  &NBSP; &NBSP; &NBSP; public ActionResult SortReservationByDate（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;使用（var db = new TravelContext（））

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var reservList = db.Reservations.ToList< Reservations>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; var newList = reservList.OrderBy（s => s.EntranceDate）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; return View（"ShowReservations"，newList）;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }   



  &NBSP; }

  &NBSP;

@model Travel.Models.Cities

@ {



  &NBSP; ViewBag.Title =" AddCity"; $
}

@using（Html.BeginForm（" AddCity"，" Home"，FormMethod.Post，new {@ class =" form-horizo​​ntal"，role =" form"}）））
{

  &NBSP; @ Html.AntiForgeryToken（）



  &NBSP; < div class =" form-horizo​​ntal">



  &NBSP; &NBSP; &NBSP; < hr />

  &NBSP; &NBSP; &NBSP; @ Html.ValidationSummary（true，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; @ Html.HiddenFor（model => model.CityID）



  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.CityName，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.EditorFor（model => model.CityName，new {htmlAttributes = new {@class =" form-control"}}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.CityName，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>



  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-offset-2 col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < input type =" submit"值= QUOT; AddCity" class =" btn btn-default" />

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; < / div>

}



< div>

  &NBSP; @ Html.ActionLink（" Back to Main"，" Index"）

< / div>

  &NBSP;&NBSP;

@model Travel.Models.AddNewHotels

@ {



  &NBSP; ViewBag.Title =" AddHotel"; $
}

@using（Html.BeginForm（" AddHotel"，" Home"，FormMethod.Post，new {@ class =" form-horizo​​ntal"，role =" form"}）））
{

  &NBSP; @ Html.AntiForgeryToken（）



  &NBSP; < div class =" form-horizo​​ntal">



  &NBSP; &NBSP; &NBSP; < hr />

  &NBSP; &NBSP; &NBSP; @ Html.ValidationSummary（true，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; @ Html.HiddenFor（model => model.HotelID）



  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.HotelName，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.EditorFor（model => model.HotelName，new {htmlAttributes = new {@class =" form-control"}}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.HotelName，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>



  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.CityName，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DropDownListFor（m => m.CityName，Model.CityItems）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.CityName，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-offset-2 col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < input type =" submit"值= QUOT; AddHotel" class =" btn btn-default" />

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; < / div>

}



< div>

  &NBSP; @ Html.ActionLink（" Back to Main"，" Index"）

< / div>

  &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP;&NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP;

@model Travel.Models.AddNewReservations

@ {

    Layout ="〜/ Views / Shared / _Layout.cshtml"; $


  &NBSP; ViewBag.Title =" AddReservation";
}

@using（Html.BeginForm（" AddReservation"，" Home"，FormMethod.Post，new {@ class =" form-horizo​​ntal"，role =" form"}）））
{

  &NBSP; @ Html.AntiForgeryToken（）



  &NBSP; < div class =" form-horizo​​ntal">



  &NBSP; &NBSP; &NBSP; < hr />

  &NBSP; &NBSP; &NBSP; @ Html.ValidationSummary（true，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; @ Html.HiddenFor（model => model.ReservationID）



  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.CustomerName，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.EditorFor（model => model.CustomerName，new {htmlAttributes = new {@class =" form-control"}}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.CustomerName，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.CustomerPassport，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.EditorFor（model => model.CustomerPassport，new {htmlAttributes = new {@class =" form-control"}}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.CustomerPassport，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.CustomerEmail，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.EditorFor（model => model.CustomerEmail，new {htmlAttributes = new {@class =" form-control"}}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.CustomerEmail，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.BirthDate，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;   @ Html.EditorFor（model => model.BirthDate，new {htmlAttributes = new {@class =" form-control datecontrol"，@ PryHolder ="输入出生日期}}}）
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.BirthDate，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.EntranceDate，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.EditorFor（model => model.EntranceDate，new {htmlAttributes = new {@class =" form-control"}}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.EntranceDate，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.LeaveDate，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.EditorFor（model => model.LeaveDate，new {htmlAttributes = new {@class =" form-control"}}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.LeaveDate，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>



  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.LabelFor（model => model.HotelName，htmlAttributes：new {@class =" control-label col-md-2"}）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DropDownListFor（m => m.HotelName，Model.HotelItems）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ValidationMessageFor（model => model.HotelName，""，new {@class =" text-danger"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>



  &NBSP; &NBSP; &NBSP; < div class =" form-group">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" col-md-offset-2 col-md-10">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ * 什么是价值？* @¥b $ b  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < input type =" submit"值= QUOT; AddReservation" class =" btn btn-default" />

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; < / div>

}



< div>

  &NBSP; @ Html.ActionLink（" Back to Main"，" Index"）

< / div>

@ {

  &NBSP; Layout ="〜/ Views / Shared / _Layout.cshtml";

  &NBSP; }
<！DOCTYPE html>



< html>

< head>

  &NBSP; < meta name =" viewport"含量="宽度=设备宽度" />

  &NBSP; < title>错误< / title>

< / head>

< body>

  &NBSP; < div> 

  &NBSP; &NBSP; &NBSP; < h1 class =" text-danger">错误。< / h1>

  &NBSP; &NBSP; &NBSP; < h2 class =" text-danger">处理您的请求时出错。请检查您的数据< / h2>

  &NBSP; < / div>

< / body>

< / html>

@ {

  &NBSP; ViewBag.Title =" Index";
}



< h2>欢迎来到HotelApp！请从菜单中选择< / h2>

@model IEnumerable< Travel.Models.Cities>





@using System.Web.Mvc



< div>

  &NBSP; < h4>所有城市< / h4>



  &NBSP; < hr />

  &NBSP; @foreach（模特中的var项目）

  &NBSP; {

  &NBSP; &NBSP; &NBSP; < dl class =" dl-horizo​​ntal">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.CityName）

  &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.CityName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd> 

  &NBSP; &NBSP; &NBSP; < / dl>

  &NBSP; }
< / div>

< div> @ Html.ActionLink（" Back to Main"，" Index"）< / div>

  &NBSP;

@model IEnumerable< Travel.Models.Hotels>





@using System.Web.Mvc



< div>

  &NBSP; < h4>所有酒店< / h4>

  &NBSP; @ Html.ActionLink（"按城市排序"，"SortHotelByCity"，"主页"）|

  &NBSP; @ Html.ActionLink（"Sort By Hotel"，"SortHotelByHotel"，"Home"）



  &NBSP; < hr />

  &NBSP; @foreach（模特中的var项目）

  &NBSP; {

  &NBSP; &NBSP; &NBSP; < dl class =" dl-horizo​​ntal">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.HotelName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.HotelName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.CityName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP;   @ Html.DisplayFor（model => item.CityName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>



$
  &NBSP; &NBSP; &NBSP; < / dl>

  &NBSP; }
< / div>

< div> @ Html.ActionLink（" Back to Main"，" Index"）< / div>

@model IEnumerable< Travel.Models.Reservations>





@using System.Web.Mvc



< div>

  &NBSP; < h4>所有预订< / h4>

  &NBSP; @ Html.ActionLink（"Sort By Hotel"，"SortReservationByHotel"，"Home"）|

  &NBSP; @ Html.ActionLink（"按日期排序"，"SortReservationByDate"，"主页"）|

  &NBSP; @ Html.ActionLink（" Sort By Customer"，" SortReservationByCustomer"，" Home"）



  &NBSP; < hr />

  &NBSP; @foreach（模特中的var项目）

  &NBSP; {

  &NBSP; &NBSP; &NBSP; < dl class =" dl-horizo​​ntal">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.CustomerName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.CustomerName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.CustomerPassport）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.CustomerPassport）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.CustomerEmail）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.CustomerEmail）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.BirthDate）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.BirthDate）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.EntranceDate）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.EntranceDate）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.LeaveDate）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.LeaveDate）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dt>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayNameFor（model => model.HotelName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / dt>



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < dd>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.DisplayFor（model => item.HotelName）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / DD> &NBSP; &NBSP; &NBSP; &NBSP;  

  &NBSP; &NBSP; &NBSP; < / dl>

  &NBSP; }
< / div>

< div> @ Html.ActionLink（" Back to Main"，" Index"）< / div>

  &NBSP;&NBSP; &NBSP;

<！DOCTYPE html>

< html>

< head>

  &NBSP; < meta charset =" utf-8" />

  &NBSP; < meta name =" viewport" content =" width = device-width，initial-scale = 1.0">

  &NBSP; < title> @ ViewBag.Title - 我的ASP.NET应用程序< / title>

  &NBSP; < link href ="〜/ Content / Site.css"的rel ="样式表"类型= QUOT;文本/ CSS" />

  &NBSP; < link href ="〜/ Content / bootstrap.min.css"的rel ="样式表"类型= QUOT;文本/ CSS" />

$


< / head>

< body>

  &NBSP; < div class =" navbar navbar-inverse navbar-fixed-top">

  &NBSP; &NBSP; &NBSP; < div class =" container">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" navbar-header">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < button type =" button"类= QUOT;导航栏肘节"数据肘节= QUOT;折叠和QUOT; data-target =" .navbar-collapse">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < span class =" icon-bar">< / span>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < span class =" icon-bar">< / span>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < span class =" icon-bar">< / span>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / button>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ActionLink（" AddHotel"，" AddHotel"，" Home"，new {area =""}，new {@class =" navbar-brand"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ActionLink（" AddReservation"，" AddReservation"，" Home"，new {area =""}，new {@class =" navbar-brand"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ActionLink（" AddCity"，" AddCity"，" Home"，new {area =""}，new {@class =" navbar-brand"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ActionLink（" ShowHotels"，" ShowHotels"，" Home"，new {area =""}，new {@class =" navbar-brand"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ActionLink（" ShowCities"，" ShowCities"，" Home"，new {area =""}，new {@class =" navbar-brand"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; @ Html.ActionLink（" ShowReservations"，" ShowReservations"，" Home"，new {area =""}，new {@class =" navbar-brand"}））
  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < div class =" navbar-collapse collapse">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < ul class =" nav navbar-nav">

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / ul>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; &NBSP; &NBSP; < / div>

  &NBSP; < / div>



  &NBSP; < div class =" container body-content">

  &NBSP; &NBSP; &NBSP; @RenderBody（）

  &NBSP; &NBSP; &NBSP; < hr />

  &NBSP; &NBSP; &NBSP; < footer>

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; < p为H.;&安培;副本; @ DateTime.Now.Year - Refael Kogan< / p>

  &NBSP; &NBSP; &NBSP; < / footer>

  &NBSP; < / div>



  &NBSP; < script src ="〜/ Scripts / modernizr-2.6.2.js">< / script>

  &NBSP; < script src ="〜/ Scripts / jquery-ui.unobtrusive.js">< / script>

  &NBSP; < script src ="〜/ Scripts / jquery-1.10.2.min.js">< / script>

  &NBSP; < script src ="〜/ Scripts / bootstrap.min.js">< / script>

  &NBSP; < script src ="〜/ Scripts / locales / bootstrap-datepicker.en-GB.min.js">< / script>

< / body>

< / html>

 公共类MvcApplication：System.Web.HttpApplication

  &NBSP; {

  &NBSP; &NBSP; &NBSP; protected void Application_Start（）

  &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; Database.SetInitializer< TravelContext>（new TravelDbInitializer（））;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; AreaRegistration.RegisterAllAreas（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; RouteConfig.RegisterRoutes（RouteTable.Routes）;

  &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; }

< connectionStrings>

  &NBSP; < add name =" TravelContext" connectionString =" Data Source =（LocalDb）\ v11.0; AttachDbFilename = | DataDirectory | \ Travelling.mdf; Integrated Security = True"的providerName = QUOT; System.Data.SqlClient的" />
$
  

  < /&的ConnectionStrings GT;

  &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP; &NBSP;&NBSP;&NBSP; &NBSP; &NBSP; &NBSP;&NBSP; &NBSP; &NBSP;   

解决方案

您好，

您能否指出此处是否有问题。

p

public class Reservations 
    {

        [Key]
        public int ReservationID { get; set; }
        [Required]
        [StringLength(50,ErrorMessage="The {0} must be at least {2} characters long",MinimumLength=3)]
        [Display(Name="CustomerName")]
        public string CustomerName { get; set; }
       [Range(000000001, int.MaxValue, ErrorMessage = "Customer Passport must be a positive number")]
        public int CustomerPassport { get; set; }
        [EmailAddress][Display(Name="Email")]
        public string CustomerEmail { get; set; }


        [DataType(DataType.Date)]

        public DateTime? BirthDate { get; set; }


        [DataType(DataType.Date)]
        [EntranceDate]
        [DateGreaterThan("LeaveDate")]

        public DateTime? EntranceDate { get; set; }      
        [DataType(DataType.Date)]

        public DateTime LeaveDate { get; set; }
        public string HotelName { get; set; }

    }

public class Cities
    {
        [Key]
        public int CityID { get; set; }
        [Required][StringLength(50,ErrorMessage="The {0} must be at least {2} characters long.",MinimumLength=3)]
       [Display(Name="City Name")] 
        public string CityName { get; set; }
        public virtual ICollection<Hotels> Hotels { get; set; }
    }

 public class Hotels
    {
        [Key]
        public int HotelID { get; set; }
        [Required]
        [StringLength(50, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 3)]
        public string HotelName { get; set; }
        public  string CityName { get; set; }
        public virtual ICollection<Reservations> Reservations { get; set; }   
    }

public class TravelContext:DbContext
    {
        public TravelContext()
            : base("TravelContext")
        {

        }

       public DbSet<Cities> Cities{get;set;}
       public DbSet<Hotels> Hotels { get; set; }
       public  DbSet<Reservations> Reservations { get; set; }


    }

                                                          

 public class TravelDbInitializer:DropCreateDatabaseAlways<TravelContext>
    {
        protected override void Seed(TravelContext context)
        {
            base.Seed(context);
            Cities city1 = new Cities
            {
                CityName = "London",

            };
            Cities city2 = new Cities
            {
                CityName = "Seatle",


            };
            Cities city3 = new Cities
            {
                CityName = "New York",

            };
            Cities city4 = new Cities
            {
                CityName = "Manchester",

            };
            Hotels hotel1 = new Hotels
            {
                HotelName = "QueenSheeba",
                CityName = city1.CityName

            };
            Hotels hotel2 = new Hotels
            {
                HotelName = "PalmBeach",
                CityName = city2.CityName
            };
            Hotels hotel3 = new Hotels
            {
                HotelName = "DeadSeaResort",
                CityName = city3.CityName
            };
            Hotels hotel4 = new Hotels
            {
                HotelName = "MayamiBeach",
                CityName = city4.CityName
            };
            Reservations reservation1 = new Reservations
            {
                CustomerName = "Michael Weisberg",
                CustomerEmail = "[e-mail]",
                CustomerPassport = 345678,
                HotelName = hotel1.HotelName,
                BirthDate = new DateTime(1986, 10, 30),
                EntranceDate = new DateTime(2016, 12, 20),
                LeaveDate = new DateTime(2016, 12, 25),

            };
            Reservations reservation2 = new Reservations
            {
                CustomerName = "Moshe Yachelson",
                CustomerEmail = "[e-mail]",
                CustomerPassport = 123456,
                HotelName = hotel2.HotelName,
                BirthDate = new DateTime(1988, 05, 15),
                EntranceDate = new DateTime(2016, 09, 20),
                LeaveDate = new DateTime(2016, 09, 23)

            };
            Reservations reservation3 = new Reservations
            {
                CustomerName = "John McDonald",
                CustomerEmail = "[e-mail]",
                CustomerPassport = 12345,
                HotelName = hotel3.HotelName,
                BirthDate = new DateTime(1990, 10, 5),
                EntranceDate = new DateTime(2015, 12, 29),
                LeaveDate = new DateTime(2016, 01, 01)
            };
            Reservations reservation4 = new Reservations
            {
                CustomerName = "ElishevaKogan",
                CustomerEmail = "[e-mail]",
                CustomerPassport = 45678,
                HotelName = hotel4.HotelName,
                BirthDate = new DateTime(1980, 12, 01),
                EntranceDate = new DateTime(2015, 11, 01),
                LeaveDate = new DateTime(2015, 11, 04),

            };
            context.Cities.Add(city1);
            context.Cities.Add(city2);
            context.Cities.Add(city3);
            context.Cities.Add(city4);
            context.Hotels.Add(hotel1);
            context.Hotels.Add(hotel2);
            context.Hotels.Add(hotel3);
            context.Hotels.Add(hotel4);
            context.Reservations.Add(reservation1);
            context.Reservations.Add(reservation2);
            context.Reservations.Add(reservation3);
            context.Reservations.Add(reservation4);
            context.SaveChanges();
        }
    }

 public class EntranceDateAttribute : ValidationAttribute
    {

        public override bool IsValid(object value)
        {
            DateTime dateStart = (DateTime)value;
            // Meeting must start in the future time.
            return (dateStart > DateTime.Now.AddDays(-1));
        }


  public class DateGreaterThanAttribute : ValidationAttribute
    {

        public DateGreaterThanAttribute(string dateToCompareToFieldName)
        {
            DateToCompareToFieldName = dateToCompareToFieldName;
        }

        private string DateToCompareToFieldName { get; set; }

        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            DateTime earlierDate = (DateTime)value;

            DateTime laterDate = (DateTime)validationContext.ObjectType.GetProperty(DateToCompareToFieldName).GetValue(validationContext.ObjectInstance, null);

            if (laterDate > earlierDate)
            {
                return ValidationResult.Success;
            }
            else
            {
                return new ValidationResult("Date is not later");
            }
        }

    }

 public class AddNewReservations:Reservations
    {
        public virtual ICollection<Hotels> Hotels { get; set; }
        public IEnumerable<SelectListItem> HotelItems
        {
            get { return new SelectList(Hotels, "HotelName", "HotelName"); }
        } 
    }

 public class AddNewHotels:Hotels
    {

        public virtual ICollection<Cities> Cities { get; set; }
        public IEnumerable<SelectListItem> CityItems
        {
            get { return new SelectList(Cities, "CityName", "CityName"); }
        } 
    }

                                                                       

public class HomeController : Controller
    {
        // GET: Home

        public ActionResult Index()
        {
            return View();
        }

        public ViewResult AddHotel()
        {
            using (var db = new TravelContext())
            {
                AddNewHotels newHotel = new AddNewHotels();

                var citiesList = db.Cities.ToList();
                if (citiesList!=null)
                {
                   newHotel.Cities = citiesList; 
                   return View(newHotel);
                }
                return View("Error");


            }
        }



        public ViewResult AddCity()
        {
            return View();
        }
        [HttpPost]
        public ActionResult AddCity(Cities city)
        {
            using (var db = new TravelContext())
            {
                if (city != null)
                {


                    var checkCity = db.Cities.Where(x => x.CityName == city.CityName).FirstOrDefault();
                    if (checkCity == null)
                    {
                        db.Cities.Add(city);
                        db.SaveChanges(); 
                        return RedirectToAction("ShowCities");
                    }
                    return View("Error");
                }
                return View("Error");
            }

        }

        [HttpPost]
        public ActionResult AddHotel(AddNewHotels hotel)
        {


            using (var db = new TravelContext())
            {
                if (hotel != null)
                {
                    var checkHotel = db.Hotels.Where(x => x.HotelName == hotel.HotelName).FirstOrDefault();
                    if (checkHotel == null)
                    {

                        db.Hotels.Add(hotel);
                        db.SaveChanges(); 
                        return RedirectToAction("ShowHotels");
                    }
                    return View("Error");
                }
                return View("Error");
            }


        }
        public ActionResult AddReservation()
        {
            using (var db = new TravelContext())
            {
                AddNewReservations newReservation = new AddNewReservations();

                var hotelsList = db.Hotels.ToList();
                if (hotelsList!=null)
                {
                newReservation.Hotels = hotelsList;

                return View(newReservation);
                }
                return View("Error");

            }
        }

        [HttpPost]
        public ActionResult AddReservation(AddNewReservations reservation)
        {
            using (var db = new TravelContext())
            {
                if (reservation != null)
                {
                     var checkReservation = db.Reservations.Where(x => x.ReservationID == reservation.ReservationID).FirstOrDefault();
                     if (checkReservation == null && ModelState.IsValid)
                    {
                        db.Reservations.Add(reservation);
                        db.SaveChanges();
                         return RedirectToAction("ShowReservations");
                    }
                     return View("Error");
                }
                return View("Error");
            }

        }



        public ActionResult ShowCities()
        {
            using (var db = new TravelContext())
            {
                var citiesList = db.Cities.ToList<Cities>();
                if (citiesList != null)
                {
                    return View(citiesList);
                }
                return View("Error");
            }
        }

        public ActionResult ShowHotels()
        {

            using (var db = new TravelContext())
            {
                var hotels = db.Hotels.ToList<Hotels>();
                if (hotels != null)
                {
                    return View(hotels);
                }
                return View("Error");
            }
        }
        public ActionResult ShowReservations()
        {
            using (var db = new TravelContext())
            {
                var reservations = db.Reservations.ToList<Reservations>();
                if (reservations != null)
                {
                    return View(reservations);
                }
                return View("Error");
            }
        }


        public ActionResult SortHotelByCity()
        {
            using (var db = new TravelContext())
            {
                var hotelList = db.Hotels.ToList<Hotels>();
                if (hotelList!=null)
                {
                     var newList = hotelList.OrderBy(s => s.CityName); 
                    return View("ShowHotels", newList);
                }
                return View("Error");   
            }
        }
        public ActionResult SortHotelByHotel()
        {
            using (var db = new TravelContext())
            {
                var hotelList = db.Hotels.ToList<Hotels>();
                if (hotelList != null)
                {
                    var newList = hotelList.OrderBy(s => s.HotelName);
                    return View("ShowHotels", newList);
                }
                return View("Error");  
            }
        }
        public ActionResult SortReservationByCustomer()
        {
            using (var db = new TravelContext())
            {
                var reservList = db.Reservations.ToList<Reservations>();
                var newList = reservList.OrderBy(s => s.CustomerName);
                return View("ShowReservations", newList);
            }
        }
        public ActionResult SortReservationByHotel()
        {
            using (var db = new TravelContext())
            {
                var reservList = db.Reservations.ToList<Reservations>();
                var newList = reservList.OrderBy(s => s.HotelName);
                return View("ShowReservations", newList);
            }
        }

        public ActionResult SortReservationByDate()
        {
            using (var db = new TravelContext())
            {
                var reservList = db.Reservations.ToList<Reservations>();
                var newList = reservList.OrderBy(s => s.EntranceDate);
                return View("ShowReservations", newList);

            }
        }    

    }

   

@model Travel.Models.Cities
@{

    ViewBag.Title="AddCity";
}
@using (Html.BeginForm("AddCity", "Home", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">

        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.CityID)

        <div class="form-group">
            @Html.LabelFor(model => model.CityName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CityName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CityName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="AddCity" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to Main", "Index")
</div>

    

@model Travel.Models.AddNewHotels
@{

    ViewBag.Title = "AddHotel";
}
@using (Html.BeginForm("AddHotel", "Home", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">

        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.HotelID)

        <div class="form-group">
            @Html.LabelFor(model => model.HotelName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.HotelName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.HotelName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.CityName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownListFor(m => m.CityName, Model.CityItems)
                @Html.ValidationMessageFor(model => model.CityName, "", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="AddHotel" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to Main", "Index")
</div>

                                         

@model Travel.Models.AddNewReservations
@{
   Layout="~/Views/Shared/_Layout.cshtml";

    ViewBag.Title = "AddReservation";
}
@using (Html.BeginForm("AddReservation", "Home", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">

        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(model => model.ReservationID)

        <div class="form-group">
            @Html.LabelFor(model => model.CustomerName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustomerName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustomerName, "", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.CustomerPassport, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustomerPassport, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustomerPassport, "", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.CustomerEmail, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.CustomerEmail, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.CustomerEmail, "", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.BirthDate, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">

             @Html.EditorFor( model=>model.BirthDate, new{htmlAttributes = new {@class = "form-control datecontrol", @PlaceHolder = "Enter Date of Birth"}})
                @Html.ValidationMessageFor(model => model.BirthDate, "", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.EntranceDate, htmlAttributes: new { @class = "control-label col-md-2"})
            <div class="col-md-10">

                @Html.EditorFor(model=>model.EntranceDate, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.EntranceDate, "", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.LeaveDate, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.LeaveDate, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.LeaveDate, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.HotelName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownListFor(m => m.HotelName, Model.HotelItems)
                @Html.ValidationMessageFor(model => model.HotelName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
              @*  what is value?*@
                <input type="submit" value="AddReservation" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to Main", "Index")
</div>

@{
    Layout ="~/Views/Shared/_Layout.cshtml";
    }
<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Error</title>
</head>
<body>
    <div> 
        <h1 class="text-danger">Error.</h1>
        <h2 class="text-danger">An error occurred while processing your request. Please Check your data</h2>
    </div>
</body>
</html>

@{
    ViewBag.Title = "Index";
}

<h2>Welcome To HotelApp! Please choose from the menu</h2>

@model IEnumerable<Travel.Models.Cities>


@using System.Web.Mvc

<div>
    <h4>All Cities</h4>

    <hr />
    @foreach (var item in Model)
    {
        <dl class="dl-horizontal">
            <dt>

                @Html.DisplayNameFor(model => model.CityName)
          </dt>

            <dd>
                @Html.DisplayFor(model => item.CityName)
            </dd> 
        </dl>
    }
</div>
<div>@Html.ActionLink("Back to Main", "Index")</div>

   

@model IEnumerable<Travel.Models.Hotels>


@using System.Web.Mvc

<div>
    <h4>All Hotels</h4>
    @Html.ActionLink("Sort By City", "SortHotelByCity", "Home")|
    @Html.ActionLink("Sort By Hotel", "SortHotelByHotel", "Home")

    <hr />
    @foreach (var item in Model)
    {
        <dl class="dl-horizontal">
            <dt>

                @Html.DisplayNameFor(model => model.HotelName)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.HotelName)
            </dd>

            <dt>
                @Html.DisplayNameFor(model => model.CityName)
            </dt>

            <dd>
           @Html.DisplayFor(model => item.CityName)
            </dd>


        </dl>
    }
</div>
<div>@Html.ActionLink("Back to Main", "Index")</div>

@model IEnumerable<Travel.Models.Reservations>


@using System.Web.Mvc

<div>
    <h4>All Reservations</h4>
    @Html.ActionLink("Sort By Hotel", "SortReservationByHotel", "Home")|
    @Html.ActionLink("Sort By Date", "SortReservationByDate", "Home")|
    @Html.ActionLink("Sort By Customer", "SortReservationByCustomer", "Home")

    <hr />
    @foreach (var item in Model)
    {
        <dl class="dl-horizontal">
            <dt>

                @Html.DisplayNameFor(model => model.CustomerName)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.CustomerName)
            </dd>

            <dt>
                @Html.DisplayNameFor(model => model.CustomerPassport)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.CustomerPassport)
            </dd>
            <dt>
                @Html.DisplayNameFor(model => model.CustomerEmail)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.CustomerEmail)
            </dd>
            <dt>
                @Html.DisplayNameFor(model => model.BirthDate)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.BirthDate)
            </dd>
            <dt>
                @Html.DisplayNameFor(model => model.EntranceDate)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.EntranceDate)
            </dd>
            <dt>
                @Html.DisplayNameFor(model => model.LeaveDate)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.LeaveDate)
            </dd>
            <dt>
                @Html.DisplayNameFor(model => model.HotelName)
            </dt>

            <dd>
                @Html.DisplayFor(model => item.HotelName)
            </dd>          
        </dl>
    }
</div>
<div>@Html.ActionLink("Back to Main", "Index")</div>

      

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>@ViewBag.Title - My ASP.NET Application</title>
    <link href="~/Content/Site.css" rel="stylesheet" type="text/css" />
    <link href="~/Content/bootstrap.min.css" rel="stylesheet" type="text/css" />


</head>
<body>
    <div class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                @Html.ActionLink("AddHotel", "AddHotel", "Home", new { area = "" }, new { @class = "navbar-brand" })
                @Html.ActionLink("AddReservation", "AddReservation", "Home", new { area = "" }, new { @class = "navbar-brand" })
                @Html.ActionLink("AddCity", "AddCity", "Home", new { area = "" }, new { @class = "navbar-brand" })
                @Html.ActionLink("ShowHotels", "ShowHotels", "Home", new { area = "" }, new { @class = "navbar-brand" })
                @Html.ActionLink("ShowCities", "ShowCities", "Home", new { area = "" }, new { @class = "navbar-brand" })
                @Html.ActionLink("ShowReservations", "ShowReservations", "Home", new { area = "" }, new { @class = "navbar-brand" })
            </div>
            <div class="navbar-collapse collapse">
                <ul class="nav navbar-nav">
                </ul>
            </div>
        </div>
    </div>

    <div class="container body-content">
        @RenderBody()
        <hr />
        <footer>
            <p>&copy; @DateTime.Now.Year - Refael Kogan</p>
        </footer>
    </div>

    <script src="~/Scripts/modernizr-2.6.2.js"></script>
    <script src="~/Scripts/jquery-ui.unobtrusive.js"></script>
    <script src="~/Scripts/jquery-1.10.2.min.js"></script>
    <script src="~/Scripts/bootstrap.min.js"></script>
    <script src="~/Scripts/locales/bootstrap-datepicker.en-GB.min.js"></script>
</body>
</html>

 public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            Database.SetInitializer<TravelContext>(new TravelDbInitializer());
            AreaRegistration.RegisterAllAreas();
            RouteConfig.RegisterRoutes(RouteTable.Routes);
        }
    }

<connectionStrings>
    <add name="TravelContext" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\Travelling.mdf;Integrated Security=True" providerName="System.Data.SqlClient" />
  
  </connectionStrings>

                                     

解决方案

Hello,

Can you indicate if there is a question here or not.

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