如何在ASP.Net MVC禁用全局过滤器选择 [英] How to disable a global filter in ASP.Net MVC selectively

问题描述

我已经建立了中，我打开我所有的控制器动作和关闭会话NHibernate的全局筛选器。这些行动的95％需要一些数据库访问，但5％的没有。有没有简单的方法来禁用这些5％这一全球性的过滤器。我可以圆走另一条路，装饰只需要对数据库的操作，但是这将是远远更多的工作。

I have set up a global filter for all my controller actions in which I open and close NHibernate sessions. 95% of these action need some database access, but 5% don't. Is there any easy way to disable this global filter for those 5%. I could go the other way round and decorate only the actions that need the database, but that would be far more work.

推荐答案

您可以编写一个标记属性：

You could write a marker attribute:

public class SkipMyGlobalActionFilterAttribute : Attribute
{
}

，然后在全球行动过滤器测试的动作此标记的presence：

and then in your global action filter test for the presence of this marker on the action:

public class MyGlobalActionFilter : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        if (filterContext.ActionDescriptor.GetCustomAttributes(typeof(SkipMyGlobalActionFilterAttribute), false).Any())
        {
            return;
        }

        // here do whatever you were intending to do
    }
}

，然后如果你想排除从全局过滤一些动作简单地用标记属性装饰它：

and then if you want to exclude some action from the global filter simply decorate it with the marker attribute:

[SkipMyGlobalActionFilter]
public ActionResult Index()
{
    return View();
}

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