在视图MVC5之间传递值

Question

我正在创建一个事件管理系统，并且想要创建一个事件，然后为此事件创建多个票证。 我正在使用c＃和ASP.NET MVC。 我已经创建了这些模型类。

public class Event
{
    public int EventID { get; set; }
    [Required]
    public String Name { get; set; }
    [Required]
    public String Location { get; set; }
    [Required]
    public DateTime Date { get; set; }
    [Required]
    [DataType(DataType.MultilineText)]
    public String Description { get; set; }
    [Required]
    public int TicketsAvailable { get; set; }
    //navigation property
    public virtual ICollection<Order> Order { get; set; }
    //navigation property
    public virtual ICollection<Ticket> Ticket { get; set;}
 }

  public class Ticket
{
   public int TicketID { get; set; }
   [Required]
   [ForeignKey("Event")]
   //foreign key
    public int EventID { get; set; }
   [Required]
   public string Description { get; set; }
   [Required]
   public float Price { get; set; }       
    //navigation property
    public virtual Event Event { get; set; }
    //navigation property
    public ICollection<OrderDetails> OrderDetails { get; set; }
}

我已将脚手架CRUD视图用于事件，然后将创建的事件的EventID传递到AddTicket视图，并创建特定于事件的新票证。 这是我的控制器类；

public class Events1Controller : Controller
{
    private IEventRepository _eventRepository;
    private ITicketRepository _ticketRepository;

    public Events1Controller()
    {
    this._eventRepository = new EventRepository(new ApplicationDbContext());
    this._ticketRepository = new TicketRepository(new ApplicationDbContext());
    }

    // GET: Events
    [AllowAnonymous]
    public ActionResult Index()
    {

        return View(_eventRepository.GetEvents());
    }
// GET: Events/Create
    [AllowAnonymous]
    public ActionResult Create()
    {
        return View();
    }

    // POST: Events/Create
    // To protect from overposting attacks, please enable the specific  properties you want to bind to, for 
    // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
    [HttpPost]
    [ValidateAntiForgeryToken]
    [AllowAnonymous]
    public ActionResult Create([Bind(Include = "EventID,Name,Location,Date,Description,TicketsAvailable")] Event @event)
    {
        if (ModelState.IsValid)
        {
            Session["Event1"] = @event;
            _eventRepository.InsertEvent(@event);

            return RedirectToAction("SaveTickets");
        }

        return View();
    }

    [AllowAnonymous]
    public ActionResult SaveTickets()
    {           
        Event @e1 = Session["Event1"] as Event;
        Ticket @ticket1 = new Ticket
        {
            EventID = @e1.EventID
        };

        return View(@ticket1);

    }



 // POST: Events/AddToTickets
    [HttpPost]
    [ValidateAntiForgeryToken]
    [AllowAnonymous]
    public ActionResult AddToTickets([Bind(Include = "TicketID, EventID,    Description, Price")] Ticket @ticket)
    {

        if (ModelState.IsValid)
        {
            _ticketRepository.InsertTicket(@ticket);
            return RedirectToAction("Index");
        }
        return View();
    }




<h2>Create</h2>

@using (Html.BeginForm())
{
 @Html.AntiForgeryToken()

<div class="form-horizontal">
    <h4>Event</h4>
    <hr />
    @Html.ValidationSummary(true, "", new { @class = "text-danger" })
    @Html.HiddenFor(model => model.TicketID)


    <div class="form-group">
        @Html.LabelFor(model => model.EventID, htmlAttributes: new { @class    = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DisplayFor(model => model.EventID, new { htmlAttributes =   new { @class = "form-control" } })

        </div>
    </div>

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



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




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

        </div>
    </div>
</div>
}

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

</div>

@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}

我在剃刀视图中使用了表单，并且事件已正确保存到数据库，并且在工单中设置了EventID并将其传递到SaveTicket视图。 但是，当我尝试并保存故障单时，便会出现问题，故障单不会保存，页面只会刷新。 我已经尝试了许多教程，但是都没有为我提供解决方案，而且我在一周的最佳时间里一直处于困境。

Answer 1

您的问题可能是您没有告诉<form>将数据发布到何处。

当您仅使用@using (Html.BeginForm())它假定您要将数据发回到视图所来自的相同URL或地址栏中。

由于返回视图的操作为SaveTickets因此数据将发布到http://host/Events1/SaveTickets但是您的[HttpPost]操作为AddToTickets 。

您也可以将[HttpPost]操作重命名为SaveTickets （这是最简单的），也可以告诉表单要发布到的URL /操作是什么。

@using (Html.BeginForm("AddToTickets","Events1"))

这可能会解决问题，但是您要听取Stephen的建议，并为Tickets创建一个单独的控制器。