How to abort / intercept MVC actions with ActionFilters?

Question

Remember to close this if it is a duplicate. I could not find the answer.

I want to place System.Web.ActionFilterAttribute in an action method and override the OnActionExecuting method to insert business logic that determines whether the action should be performed.

Can I use an ActionExecutingContext to cancel an executable action method and do one of the following:

• Send the HTTP status code (and the corresponding <customError> page).
• Perform a different action method within the same controller.

Answer 1

Send the HTTP status code (and the corresponding <customError> page)

Nearly:

 public override void OnActionExecuting(ActionExecutingContext filterContext) { filterContext.HttpContext.Response.StatusCode = 500; } 

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Perform a different action method within the same controller.

Yes:

 public override void OnActionExecuting(ActionExecutingContext filterContext) { filterContext.Result = new ViewResult() { ViewName = "SomeOtherAction" }; } 

Answer 2

You can always redirect to another controller / action in the action filter.

See here for an example.