Custom action filterattribute

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  • 1. Custom ActionFilterAttribute Bryan lin 2014/03/21
  • 2. Agenda  Introduction of ActionFilterAttribute  Implementation of custom ActionFilterAttribute
  • 3. Introduction of ActionFilterAttribute  System.Web.Mvc.ActionFilterAttribute has the ability for inserting some logics before/after action executing or result executing(such as render html)
  • 4. Introduction of ActionFilterAttribute  System.Web.Mvc.ActionFilterAttribute has 4 methods:  public virtual void OnActionExecuted(ActionExecutedContext filterContext);  public virtual void OnActionExecuting(ActionExecutingContext filterContext);  public virtual void OnResultExecuted(ResultExecutedContext filterContext);  public virtual void OnResultExecuting(ResultExecutingContext filterContext);
  • 5. Introduction of ActionFilterAttribute  Do something before action executing, we can override the method  public override void OnActionExecuted(ActionExecutedContext filterContext);  Do something after action executing, we can override the method  public override void OnActionExecuting(ActionExecutingContext filterContext);  Do something before result executing, we can override the method  public override void OnResultExecuted(ResultExecutedContext filterContext);  Do something after result executing, we can override the method  public virtual void OnResultExecuting(ResultExecutingContext filterContext);
  • 6. Implementation of custom ActionFilterAttribute  Step 1: Inherit the ActionFilterAttribute
  • 7. Implementation of custom ActionFilterAttribute  Step 2: Override the method that you want to add your logics on the timing
  • 8. Implementation of custom ActionFilterAttribute  Step 3: Modify the FilterConfig in App_Start folder and add your custom ActionFilterAttribute here, that’s all.
  • 9. FAQ