How to disable a global filter in ASP.Net MVC selectively

Question

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.

Answer 1

You could write a marker attribute:

public class SkipMyGlobalActionFilterAttribute : Attribute { } 

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     } } 

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(); }