Using handleError out of the box in mvc3, problem

I trying to do something like that

First, Create a new mvc 3 project in visual studio 2010

Next, Turning on the custom error in the Views\Shared\Web.config

 <system.web>
    <customErrors mode="On"/>
 ...

And then, I put the Tag in the Index ActionResult, Home Controller

Public Class HomeController
    Inherits System.Web.Mvc.Controller


    <HandleError()> _
    Function Index() As ActionResult
        ViewData("Message") = "Welcome to ASP.NET MVC!"
        Throw New InvalidOperationException
        Return View()
    End Function

    Function About() As ActionResult
        Return View()
    End F开发者_Python百科unction



End Class

Finally run the app, and always show the yellow message error. I review a lot of examples and always indicated that is correct, but doesn't work.

I appreciate your help

---

You should do this in the main ~/web.config file, not the one in ~/Views/Shared/Web.config:

<system.web>
    <customErrors mode="On"/>
    ...
</system.web>

Also ensure that ~/Views/Shared/Error.cshtml is present as this will be the rendered view in case of an exception.

And you no longer need to decorate your controller with the <HandleError()> attribute as ASP.NET MVC 3 uses a global filter for this.