C# ASP.NET MVC如何查找已出错的属性

我希望ModelBinder中出现错误，自动在ModelState中追加错误代码。 因此，我扩展了默认属性以添加属性（关于RequiredAttribute、RangeAttribute等），如：

但我不知道，我怎么知道ModelBinder中哪个属性是错误的

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] = ...
    }
}

---

您可以访问MVC的源代码

以及重写DefaultModelBinder

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] = ...
    }
}