为什么提交按钮将空数据从视图传递到控制器

Question

我对C＃和MVC非常陌生，这可能看起来像一个基本问题，但即使在寻找具有类似问题的人之后，我也无法做到这一点工作。

问题是我在编辑视图上的提交按钮，出于某种原因将空数据传递给Update方法而不是表单输入数据。

这是视图：

<div class="row-fluid metro"> 
<div class="span2 offset4"> 

    @using (Html.BeginForm("Update", "Realty", FormMethod.Post)) 
    { 

     @Html.HiddenFor(model => model.Address) 
     @Html.HiddenFor(model => model.Details) 
     @Html.HiddenFor(model => model.Manager) 
     @Html.ValidationSummary(true) 
     <div class="control-group"> 
      <label class="control-label">Details</label> 
      <div class="controls"> 
       @Html.EditorFor(model => model.Details) 
       @Html.ValidationMessageFor(model => model.Details) 
      </div> 
     </div> 
     <div class="control-group"> 
      <label class="control-label">Address</label> 
      <div class="controls"> 
       @Html.EditorFor(model => model.Address) 
       @Html.ValidationMessageFor(model => model.Address) 
      </div> 
     </div> 


     <div class="control-group"> 
      <label class="control-label">Manager</label> 
      <div class="controls"> 
        @Html.DropDownListFor(model => model.Manager.Id, Model.Managers) 

       </div> 
     </div> 



     <div class="form-actions"> 
      <button type="submit" class="btn btn-primary">Guardar</button> 
      <a href="@Url.Action("Index", "Realty")"><button type="button" class="btn">Cancelar</button></a> 
     </div> 
    } 
</div> 

这是视图模型 公共类RealtyViewModel {/// /// 获取或设置ID。 /// public int Id {get;组; }

public string Address { get; private set; } 

    /// <summary> 
    /// Gets the details. 
    /// </summary> 
    public string Details { get; private set; } 
    public List<HomeViewModel> Homes { get; private set; } 

    /// <summary> 
    /// Gets the manager. 
    /// </summary> 





    public IEnumerable<SelectListItem> Managers { get; set; } 

    public ManagerViewModel Manager { get; private set; } 
    public RealtyViewModel(int id,string Address, string Details, ManagerViewModel Manager) 
    { 
     this.Id = id; 
     this.Address = Address; 
     this.Details = Details; 
     this.Manager = Manager; 
    } 

    public RealtyViewModel() {} 

} 

}

而且finnally，这是来自控制器的更新方法，如果需要：

  public ActionResult Update(RealtyViewModel model) 
    { 
     if (model.Id == 0) 
     { 
      var manager = this.managerService.Get(model.Manager.Id); 
      this.realtyService.Create(model.Address, model.Details,manager); 
     } 
     else 
     { 
      var manager = this.managerService.Get(model.Manager.Id); 
      this.realtyService.Update(model.Id,model.Address, model.Details, manager); 
     } 

     return this.RedirectToAction("Index"); 
    } 

任何帮助将不胜感激，谢谢提前。

  public ActionResult Edit(int id) 
    { 
     List<SelectListItem> managers = new List<SelectListItem>(); 
     var model = new RealtyViewModel(); 

     if (id != 0) 
     { 
      var realty = this.realtyService.Get(id); 
      var mvm = new ManagerViewModel(realty.Manager.Id, realty.Manager.Name, realty.Manager.Age); 
      model = new RealtyViewModel(realty.Id, realty.Address, realty.Details, mvm); 
     } 
     foreach (var Manager in managerService.GetAll()) 
     { 
      managers.Add(new SelectListItem { Value=Manager.Id.ToString(),Text=Manager.Name}); 
     } 
     model.Managers = managers; 
     return this.View(model); 
    } 

Answer 1

尝试从这个表格

<div class="row-fluid metro"> 
<div class="span2 offset4"> 

    @using (Html.BeginForm("Update", "Realty", FormMethod.Post)) 
     { 
     @Html.ValidationSummary(true) 
      <div class="control-group"> 
      <label class="control-label">Details</label> 
      <div class="controls"> 
       @Html.EditorFor(model => model.Details) 
       @Html.ValidationMessageFor(model => model.Details) 
      </div> 
     </div> 
     <div class="control-group"> 
      <label class="control-label">Address</label> 
      <div class="controls"> 
       @Html.EditorFor(model => model.Address) 
       @Html.ValidationMessageFor(model => model.Address) 
      </div> 
     </div> 


     <div class="control-group"> 
      <label class="control-label">Manager</label> 
      <div class="controls"> 
        @Html.DropDownListFor(model => model.Manager.Id, Model.Managers) 

       </div> 
     </div> 



     <div class="form-actions"> 
      <button type="submit" class="btn btn-primary">Guardar</button> 
      <a href="@Url.Action("Index", "Realty")"><button type="button" class="btn">Cancelar</button></a> 
     </div> 
    } 
</div>