接口上的MVC 2 UpdateModel,是否应忽略ModelBinderAttribute?

我有一些表单,这些表单发布了特定抽象类实例的数据:

public abstract class IRestriction
{
    public string Name {get; set;}
    public abstract IModelBinder GetBinder();
}

IRestriction restriction = (IRestriction)Activator.CreateInstance(Type.GetType(restriction.restriction_class));

然后正确渲染相应的局部视图。

当表单被发回时,类型被正确推断并以相同的方式激活。

但是,我还不能让UpdateModel绑定到具体的实现。

我尝试过的事情:

我已经在具体类上设置了ModelBinderAttribute,但是它被忽略了。

[ModelBinder(typeof(MyCustomModelBinder))]
public class ConcreteRestriction : IRestriction

我已经清除了所有的modelbinder,只从接口添加了binder。

Binders.Clear();
Binders.Add(item.GetType(), item.GetBinder());

这些都不管用。

ModelBinderAttribute是否被错误地忽略?

**-------------------------更新----------------------**

这里有一个解决方案,任何其他人与同一个问题谁碰巧遇到这个。

以下类继承控制器。继承它并调用UpdateModelDynamic()/TryUpdateModelDynamic()

public class DynamicTypeController : Controller
{
    internal static bool IsPropertyAllowed(string propertyName, string[] includeProperties, string[] excludeProperties)
    {
        // We allow a property to be bound if its both in the include list AND not in the exclude list.
        // An empty include list implies all properties are allowed.
        // An empty exclude list implies no properties are disallowed.
        bool includeProperty = (includeProperties == null) || (includeProperties.Length == 0) || includeProperties.Contains(propertyName, StringComparer.OrdinalIgnoreCase);
        bool excludeProperty = (excludeProperties != null) && excludeProperties.Contains(propertyName, StringComparer.OrdinalIgnoreCase);
        return includeProperty && !excludeProperty;
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model) where TModel : class
    {
        return TryUpdateModelDynamic(model, null, null, null, ValueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string prefix) where TModel : class
    {
        return TryUpdateModelDynamic(model, prefix, null, null, ValueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string[] includeProperties) where TModel : class
    {
        return TryUpdateModelDynamic(model, null, includeProperties, null, ValueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties) where TModel : class
    {
        return TryUpdateModelDynamic(model, prefix, includeProperties, null, ValueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties, string[] excludeProperties) where TModel : class
    {
        return TryUpdateModelDynamic(model, prefix, includeProperties, excludeProperties, ValueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, IValueProvider valueProvider) where TModel : class
    {
        return TryUpdateModelDynamic(model, null, null, null, valueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string prefix, IValueProvider valueProvider) where TModel : class
    {
        return TryUpdateModelDynamic(model, prefix, null, null, valueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string[] includeProperties, IValueProvider valueProvider) where TModel : class
    {
        return TryUpdateModelDynamic(model, null, includeProperties, null, valueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties, IValueProvider valueProvider) where TModel : class
    {
        return TryUpdateModelDynamic(model, prefix, includeProperties, null, valueProvider);
    }

    protected internal bool TryUpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties, string[] excludeProperties, IValueProvider valueProvider) where TModel : class
    {
        if (model == null)
        {
            throw new ArgumentNullException("model");
        }
        if (valueProvider == null)
        {
            throw new ArgumentNullException("valueProvider");
        }

        Predicate<string> propertyFilter = propertyName => IsPropertyAllowed(propertyName, includeProperties, excludeProperties);
        IModelBinder binder = Binders.GetBinder(model.GetType());

        ModelBindingContext bindingContext = new ModelBindingContext()
        {
            ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(() => model, model.GetType()),
            ModelName = prefix,
            ModelState = ModelState,
            PropertyFilter = propertyFilter,
            ValueProvider = valueProvider
        };
        binder.BindModel(ControllerContext, bindingContext);
        return ModelState.IsValid;
    }


    protected internal void UpdateModelDynamic<TModel>(TModel model) where TModel : class
    {
        UpdateModelDynamic(model, null, null, null, ValueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string prefix) where TModel : class
    {
        UpdateModelDynamic(model, prefix, null, null, ValueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string[] includeProperties) where TModel : class
    {
        UpdateModelDynamic(model, null, includeProperties, null, ValueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties) where TModel : class
    {
        UpdateModelDynamic(model, prefix, includeProperties, null, ValueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties, string[] excludeProperties) where TModel : class
    {
        UpdateModelDynamic(model, prefix, includeProperties, excludeProperties, ValueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, IValueProvider valueProvider) where TModel : class
    {
        UpdateModelDynamic(model, null, null, null, valueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string prefix, IValueProvider valueProvider) where TModel : class
    {
        UpdateModelDynamic(model, prefix, null, null, valueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string[] includeProperties, IValueProvider valueProvider) where TModel : class
    {
        UpdateModelDynamic(model, null, includeProperties, null, valueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties, IValueProvider valueProvider) where TModel : class
    {
        UpdateModelDynamic(model, prefix, includeProperties, null, valueProvider);
    }

    protected internal void UpdateModelDynamic<TModel>(TModel model, string prefix, string[] includeProperties, string[] excludeProperties, IValueProvider valueProvider) where TModel : class
    {
        bool success = TryUpdateModelDynamic(model, prefix, includeProperties, excludeProperties, valueProvider);
        if (!success)
        {
            string message = String.Format("The model of type '{0}' could not be updated.", model.GetType().FullName);
            throw new InvalidOperationException(message);
        }
    }

}