ASP.NET MVC3 includes a new class HttpNotFoundResult in  System.Web.Mvc namespace.

HttpNotFoundResult: Instance of HttpNotFoundResult class indicates to client(browser) that the requested resource was not found. It returns a 404 HTTP status code to the client. Generally we return 404 status code if a requested webpage is not available. In case of MVC applications we return 404 status code is in terms of resources, for example we are searching for particular user profile in the portal, if the user profile is not found, we can return 404.

How to return 404 status code from a MVC application?
First way is to instantiate HttpNotFoundResult class and return the object.

public ActionResult Index()
{
            var result = new HttpNotFoundResult();
            return result;
}

Next alternative is to makes use of HttpNotFound() helper method of the Controller class which returns the HttpNotFoundResult instance.

public ActionResult Index()
{
             return HttpNotFound();
}

we can return 404 along with custom status code description,using the overloded version of HttpNotFound(string statusDescription).

public ActionResult Index()
{
             return HttpNotFound("can not find requested resource");
}

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A New Look
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Fully Integrated
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DotNetNuke in the Cloud
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SharePoint Meets DotNetNuke
Available exclusively in the DotNetNuke Enterprise Edition, the Microsoft SharePoint Connector for DotNetNuke enables fast, secure publishing of documents stored in Sharepoint to public web sites, extranets or intranets. Organizations can securely manage their document library within SharePoint and selectively publish those documents using the flexible, cost effective DotNetNuke platform.

DotNetNuke Learns a New Language
DotNetNuke 6 has gotten a major new platform upgrade as the result of a complete conversion to C#. This language change will make it more accessible to a larger development community and allows us to leverage many development tools which have always had strong C# support. The C# version of DotNetNuke has been available for the past year and starting with DotNetNuke 6, it is officially the primary development language of the platform.

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