Asp.net MVC 2应用程序错误

Question

Server Error in '/' Application.

The model item passed into the dictionary is of type 'Develosoft4.Models.Cita', but this dictionary requires a model item of type 'Develosoft4.Models.CitaFormViewModel'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: The model item passed into the dictionary is of type 'Develosoft4.Models.Cita', but this dictionary requires a model item of type 'Develosoft4.Models.CitaFormViewModel'.

源错误：

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

这是Create.aspx抛出错误：

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Develosoft4.Models.CitaFormViewModel>" %> 
    <h2>Create</h2> 

    <% using (Html.BeginForm()) {%> 
     <%: Html.ValidationSummary(true) %> 

     <fieldset> 
      <legend></legend> 


      <div class="editor-label"> 
       <%: Html.LabelFor(model => model.Cita.materia)%> 
      </div> 
      <div class="editor-field"> 

       <%: Html.DropDownListFor(model => model.Cita.materia, Model.Materias)%> 
       <%: Html.ValidationMessageFor(model => model.Cita.materia)%> 
      </div> 

      <div class="editor-label"> 
       <%: Html.LabelFor(model => model.Cita.cubiculo)%> 
      </div> 
      <div class="editor-field"> 
       <%: Html.DropDownListFor(model => model.Cita.cubiculo, Model.Cubiculos)%> 
       <%: Html.ValidationMessageFor(model => model.Cita.cubiculo)%> 
      </div> 

      <div class="editor-label"> 
       <%: Html.LabelFor(model => model.Cita.profesor)%> 
      </div> 
      <div class="editor-field"> 
       <%: Html.DropDownListFor(model => model.Cita.profesor, Model.Profesores)%> 
       <%: Html.ValidationMessageFor(model => model.Cita.profesor)%> 
      </div> 

      <div class="editor-label"> 
       <%: Html.LabelFor(model => model.Cita.fecha)%> 
      </div> 
      <div class="editor-field"> 

       <%: Html.ValidationMessageFor(model => model.Cita.fecha)%> 
        <form> 
    <input type="text" name="fecha" id="campofecha"> 
</form> 
      </div> 

      <div class="editor-label"> 
       <%: Html.LabelFor(model => model.Cita.horaInicio)%> 
      </div> 
      <div class="editor-field"> 
       <%: Html.TextBoxFor(model => model.Cita.horaInicio)%> 
       <%: Html.ValidationMessageFor(model => model.Cita.horaInicio)%> 
      </div> 

      <div class="editor-label"> 
       <%: Html.LabelFor(model => model.Cita.horaFinal)%> 
      </div> 
      <div class="editor-field"> 
       <%: Html.TextBoxFor(model => model.Cita.horaFinal)%> 
       <%: Html.ValidationMessageFor(model => model.Cita.horaFinal)%> 
      </div> 

      <p> 
       <input type="submit" value="Create" /> 
      </p> 
     </fieldset> 

    <% } %> 

    <div> 
     <%: Html.ActionLink("Back to List", "Index") %> 
    </div> 

这是CitaFormViewModel.cs

using System.Web.Mvc; 

namespace Develosoft4.Models 
{ 
    public class CitaFormViewModel 
    { 
     private static CubiculoRepository cubiculosRepository = new CubiculoRepository(); 
     private static MateriaRepository materiasRepository = new MateriaRepository(); 
     private static ProfesorRepository profesorRepository = new ProfesorRepository(); 

    // Properties 
     public Cita Cita { get; private set; } 
     public SelectList Cubiculos { get; private set; } 
     public SelectList Materias { get; private set; } 
     public SelectList Profesores { get; private set; } 
    // Constructor 
     public CitaFormViewModel(Cita cita) 
     { 
      Cita = cita; 
      Cubiculos = new SelectList(cubiculosRepository.FindAllCubiculos(),"id","nombre", cita.cubiculo); 
      Materias = new SelectList(materiasRepository.FindAllMaterias(), "id", "nombre", cita.materia); 
      Profesores = new SelectList(profesorRepository.FindAllProfesores(), "id", "nombre", cita.profesor); 
     } 
    } 
} 

CitaController.cs

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.Mvc; 
using Develosoft4.Models; 


namespace Develosoft4.Controllers 
{ 
    public class CitaController : Controller 
    { 
     CitaRepository repository = new CitaRepository(); 

     // 
     // GET: /Cita/ 
     [Authorize (Roles= "director")] 
     public ActionResult Index(int page = 0) 
     { 
      const int pageSize = 10; 

      var citas = repository.FindAllCitas(); 
      var paginatedCita = new PaginatedList<Cita>(citas,page,pageSize); 
      return View(paginatedCita); 
     } 
     // 
     // GET: /Cita/Details/2 

     public ActionResult Details(int id) 
     { 
      Cita cita = repository.GetCita(id); 

      if (cita == null) 
       return View("NotFound"); 
      else 
       return View("Details", cita); 
     } 
     // 
     // GET: /Cita/Edit/2 

     public ActionResult Edit(int id) 
     { 
      Cita cita = repository.GetCita(id); 
      CitaFormViewModel viewModel = new CitaFormViewModel(cita); 
      return View(viewModel); 
     } 

     // 
     // POST: /Cita/Edit/2 
     [AcceptVerbs(HttpVerbs.Post)] 
     public ActionResult Edit(int id, FormCollection formValues) 
     { 
      Cita cita = repository.GetCita(id); 

      try 
      { 
       UpdateModel(cita); 
       repository.Save(); 
       return RedirectToAction("Details", new { id = cita.id }); 
      } 
      catch 
      { 
       //ModelState.AddRuleViolations(materia.GetRuleViolations()); 

       return View(cita); 
      } 
     } 

     // 
     // GET: /Cita/Create 
     public ActionResult Create() 
     { 
      Cita cita = new Cita(); 
      return View(new CitaFormViewModel(cita)); 
     } 
     // 
     // POST: /Cita/Create 

     [AcceptVerbs(HttpVerbs.Post)] 
     public ActionResult Create(Cita cita) 
     { 
      if (ModelState.IsValid) 
      { 
       try 
       { 
        repository.Add(cita); 
        repository.Save(); 
        return RedirectToAction("Details", new { id = cita.id }); 
       } 
       catch 
       { 
        //ModelState.AddRuleViolations(materia.GetRuleViolations()); 
       } 
      } 

      return View(cita); 
     } 

     // 
     // HTTP GET: /Cita/Delete/1 

     public ActionResult Delete(int id) 
     { 
      Cita cita = repository.GetCita(id); 

      if (cita == null) 
       return View("NotFound"); 
      else 
       return View(); 
     } 

     // actitud 
     // HTTP POST: /Cita/Delete/1 

     [AcceptVerbs(HttpVerbs.Post)] 
     public ActionResult Delete(int id, string confirmButton) 
     { 
      Cita cita = repository.GetCita(id); 

      if (cita == null) 
       return View("NotFound"); 

      repository.Delete(cita); 
      repository.Save(); 

      return View("Deleted"); 
     } 
    } 
} 

Answer 1

你试图通过模型Develosoft4.Models.Cita类型的对象时，它期待Develosoft4.Models.CitaFormViewModel类型的对象。

你可能有一个强类型的视图，所以你需要传递它所期望的类型。

检查控制器时，你应该在结尾有这样的事情：

return View(new Develosoft4.Models.CitaFormViewModel() 
    { 
     // initializers 
    }); 

不知道你代码实际上看起来像，所以这是刺在黑暗中:)

编辑：根据您添加的代码，看起来您的Post版本的Create正在向视图返回错误的类型。

你这样做：

return View(cita); 

当你Create视图期待一个CitaFormViewModel，所以你可能应该做的：

return View(new CitaFormViewModel(cita)); 

只是艾克您在Get版本Create观点做。

Answer 2

The model item passed into the dictionary is of type 'Develosoft4.Models.Cita', but this dictionary requires a model item of type 'Develosoft4.Models.CitaFormViewModel'

看起来你正在返回从操作方法错了型号。

//This is where I think the error is. It is expecting a CityFormViewModel instead of a Cita object 
return View(citaModel);