使用IOverrideFilter覆盖定制ActionFilters [英] Using IOverrideFilter to override custom ActionFilters

问题描述

我想用 IOverrideFilter 界面重写我的自定义全局过滤器，但它只是不工作！ code看起来是如下：

I want to use IOverrideFilter interface to override my custom global filter but it is simply not working! Code looks like to be as follow:

public sealed class MyGlobalFilterExceptionAttribute : FilterAttribute, IOverrideFilter
{
    public Type FiltersToOverride
    {
        get { return typeof(ITest); }
    }
}

我的全局过滤器已实施 ITEST 接口。我知道我可以在我原来的全局过滤器实现的任务，但我想通过 IOverrideFilter 这样做。

My global filter has implemented ITest interface. I know I can implement the task in my original global filter but I would like to do so by IOverrideFilter.

任何想法??

推荐答案

MSDN的信息是不是它完全清楚，但<一个href=\"https://msdn.microsoft.com/en-us/library/system.web.mvc.filters.ioverridefilter.filterstooverride(v=vs.118).aspx\"相对=nofollow> IOverrideFilter.FiltersToOverride 必须究竟执行下列操作之一：

The msdn info is not entirely clear about it but IOverrideFilter.FiltersToOverride must be exactly one of the following:

• IActionFilter


• 个IAuthorizationFilter


• IAuthenticationFilter


• 个IExceptionFilter

• IActionFilter
• IAuthorizationFilter
• IAuthenticationFilter
• IExceptionFilter

基本上，你不能覆盖特定的过滤器，只能覆盖上述类别之一的所有过滤器。看看一个在 ProcessOverrideFilters 方法中的的来源$ C ​​$ C 。

Basically, you cannot override specific filters, you can only override all the filters of one of the categories above. Have a look a the ProcessOverrideFilters method in the source code.

所以，让我们说你的 ITEST 过滤器类型 IActionFilter ，那么你的倍率是（同逻辑也适用于其他任何过滤器类）：

So, let's say that your ITest filter is of type IActionFilter, then your override will be (The same logic would apply for any other filter category):

public Type FiltersToOverride
{
    get { return typeof(IActionFilter); }
}

您也可以使用predefined <一个href=\"https://msdn.microsoft.com/en-us/library/system.web.mvc.overrideactionfiltersattribute(v=vs.118).aspx\"相对=nofollow> OverrideActionFilters （以及其他类别的过滤器类似predefined覆盖属性）。

You could also use the predefined OverrideActionFilters (and similar predefined override attributes for other filter categories).

有关更精细的覆盖，可能需要制定具体的解决方案，<一个href=\"http://stackoverflow.com/questions/9953760/how-to-disable-a-global-filter-in-asp-net-mvc-selectively\">like这一个或写自己的过滤器提供商在这个非常漂亮的文章

For a more fine-grained override, you might need to develop specific solutions like this one or write your own filter provider as in this very nice article

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