BindAttribute，排除複雜類型的嵌套屬性

Question

如何BindAttribute在控制器中包含或排除嵌套屬性？

我有一個「流」模式：

public class Stream 
{ 
    public int ID { get; set; } 

    [Required] 
    [StringLength(50, ErrorMessage = "Stream name cannot be longer than 50 characters.")] 
    public string Name { get; set; } 

    [Required] 
    [DataType(DataType.Url)] 
    public string URL { get; set; } 

    [Required] 
    [Display(Name="Service")] 
    public int ServiceID { get; set; } 

    public virtual Service Service { get; set; } 
    public virtual ICollection<Event> Events { get; set; } 
    public virtual ICollection<Monitor> Monitors { get; set; } 
    public virtual ICollection<AlertRule> AlertRules { get; set; } 
} 

對於此模型的「創造」看來，我已經做了視圖模型來傳遞一些額外的信息視圖：

public class StreamCreateVM 
{ 
    public Stream Stream { get; set; } 
    public SelectList ServicesList { get; set; } 
    public int SelectedService { get; set; } 
} 

這裏是我創造職位的行動：

[HttpPost] 
    [ValidateAntiForgeryToken] 
    public ActionResult Create([Bind(Include="Stream, Stream.Name, Stream.ServiceID, SelectedService")] StreamCreateVM viewModel) 
    { 
     if (ModelState.IsValid) 
     { 
      db.Streams.Add(viewModel.Stream); 
      db.SaveChanges(); 
      return RedirectToAction("Index", "Service", new { id = viewModel.Stream.ServiceID }); 
     } 

     return View(viewModel); 
    } 

現在，這一切工作，除了[Bind(Include="Stream, Stream.Name, Stream.ServiceID, SelectedService")]位。我似乎無法在嵌套對象中包含或排除屬性。

Answer 1

據this answer，你可以這樣做：

[Bind(Include="Name, ServiceID")] 
public class Stream 
{ 
... 
} 

然後

[HttpPost] 
[ValidateAntiForgeryToken] 
public ActionResult Create([Bind(Include="Stream, SelectedService")] StreamCreateVM viewModel) 
{ 
... 
}