Customizing Authorize attribute or Role based Authentication or Authorization in MVC

As the TITLE says Customizing Authorize attribute, In this post I will show how to create a Customized Authorize attribute and use it. This is used to redirect the user to Home Page when he/she is authenticated and not authorized i.e, when the Authorize attribute generated 401 response it will redirect to Login page.
Previously I had shown how to...
DataTables in MVC:

• Code First Migrations in MVC 5
• Jquery DataTable in MVC
• Jquery DataTable multisearch paging and Sorting in MVC server side
• Jquery DataTable paging, Sorting and Multi search with datepicker in MVC server side
• Cascading DropDowns in Asp.Net MVC
• AngularJS with Web Api in Asp.net MVC using Token based Authentication
• Ajax helper Based Search in MVC

AngularJS:

• Two way Binding in AngularJS
• Simple Routing in AngularJS
• Datatables in AngularJS and asp.net mvc
• Datatables Column Filter with AngularJS and asp.net mvc
• Datatable Exporting with AngularJS and asp.net mvc

By creating a CustomAuthorize class which inherits AuthorizeAttribute we can redirect the user to home page instead of a login page.
How to use?

  

[CustomAuthorize(Roles = "Admin")]
public ActionResult Index()
{
 return View();
}

  

public class CustomAuthorize : AuthorizeAttribute
{
 protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
 {
  if (!filterContext.HttpContext.Request.IsAuthenticated)
  {
   base.HandleUnauthorizedRequest(filterContext);
  }
  else
  {
   filterContext.Result = new RedirectToRouteResult(new
   RouteValueDictionary(new { controller = "Home", action = "Index" }));
  }
 }
}