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ASP.NET Core MVC 2.0 Cookbook
book

ASP.NET Core MVC 2.0 Cookbook

by Jason De Oliveira, Engin Polat, Stephane Belkheraz
February 2018
Intermediate to advanced content levelIntermediate to advanced
668 pages
15h 18m
English
Packt Publishing
Content preview from ASP.NET Core MVC 2.0 Cookbook

How to do it...

We'll understand the IActionFilter interface, TypeFilter, and ServiceFilter attributes by applying a dependency injection into a controller.

  1. First, let's create an ActionFilter class only by deriving from IActionFilter:
public class MyActionFilter : IActionFilter{  public void OnActionExecuting(ActionExecutingContext context)  {    // do something before the action executes  }  public void OnActionExecuted(ActionExecutedContext context)  {    // do something after the action executes  }}
  1. To use this class as an attribute, we have to use a TypeFilter attribute, and give it this class as a parameter. We can't use MyActionFilter directly as an attribute, because it doesn't inherit from ActionFilterAttribute:
[TypeFilter(typeof(MyActionFilter))] ...
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Publisher Resources

ISBN: 9781785886751Other