ASP.NET MVC如何查找哪個屬性出錯

我想在ModelBinder中出現錯誤，在ModelState中自動添加錯誤代碼。所以我不得不擴展了默認的屬性添加屬性（約RequiredAttribute標籤，RangeAttribute等），如：ASP.NET MVC如何查找哪個屬性出錯

//new Attribute 
public class TestRequiredAttribute : RequiredAttribute 
{ 
    public int ErrorCode { get; set; } 
}

但我不kown，我怎麼能kown哪個屬性已被ModelBinder的錯誤？

public class TestModelBinder : DefaultModelBinder 
{ 
     protected override void SetProperty(ControllerContext controllerContext, 
ModelBindingContext bindingContext, 
System.ComponentModel.PropertyDescriptor propertyDescriptor, 
object value) 
    { 
      //the error was happend in here 
      base.SetProperty(controllerContext, bindingContext, propertyDescriptor, value); 

      //in here to find which attribute has been error? 
      to find attribute and to get ErrorCode then 
      bindingContext.ModelState[modelStateName+code] = ... 
    } 
}

來源

2013-11-25 zt9788

ASP.NET MVC如何查找哪個屬性出錯

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