Tip: ASP. NET MVC4: (6) Global filter, asp. netmvc4

Tip: ASP. NET MVC4: (6) Global filter, asp. netmvc4

Original article: http://blog.csdn.net/zx13525079024/article/details/19161777

The global filter in Asp. Net MVC4 can monitor the whole project globally.

Create an MVC4 project. You can see the following code in the global. asax file: FilterConfig. RegisterGlobalFilters (GlobalFilters. Filters );

Indicates registering a global filter.

GlobalFilters is a set of global filters. You can add a filter using the add method. By default, the HandleErrorAttribute filter is added to the set.

Next, create a custom filter and add it to the global filter set.

1. Create a custom filter

To create a custom filter, you must inherit the ActionFilterAttribute class. We create a filter named mermerfilterattribute and record the time in the action.

The Code is as follows:

 

[Csharp]View plaincopy

1. Public class CustomerFilterAttribute: ActionFilterAttribute
2. {
4. Public override void OnActionExecuting (ActionExecutingContext filterContext)
5. {
6. Base. OnActionExecuting (filterContext );
7. FilterContext. HttpContext. Response. Write ("Start Time:" + DateTime. Now. ToString () + "<br/> ");
8. }
10. Public override void OnActionExecuted (ActionExecutedContext filterContext)
11. {
12. Base. OnActionExecuted (filterContext );
13. Var controllerName = filterContext. RouteData. Values ["controller"]. ToString ();
14. Var actionName = filterContext. RouteData. Values ["action"]. ToString ();
16. FilterContext. HttpContext. Response. Write ("End Time:" + DateTime. Now. ToString () + "<br/> ");
17. FilterContext. HttpContext. Response. Write ("controller:" + controllerName + ", action:" + actionName );
18. }
19. }

2. Register a global Filter

After the filter is created, we Add the filter to the global filter and use filters. Add (new CustomerFilterAttribute (); method,

The Code is as follows:

[Csharp]View plaincopy

1. Public class FilterConfig
2. {
3. Public static void RegisterGlobalFilters (GlobalFilterCollection filters)
4. {
5. Filters. Add (new HandleErrorAttribute ());
6. Filters. Add (new CustomerFilterAttribute ());
7. }
8. }

Next we run each page of the project, and we will see the output time and controller name in the page, as shown below: