ASP.NET MVC3 includes 3 new “ActionResult” Types. HttpNotFoundResult RedirectResult HttpStatusCodeResult 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 404…

Action Filters are available from ASP.NET MVC 2. Action Filters are the attributes used to apply pre processing  or post processing logic on the Action methods and Action Results declarative fashion (i.e.: before executing an action method or after executing action method , before returning an action result or after returning action result). For example…

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ASP.NET MVC 3 adds great features to MVC 2. View Enhancements Add View Dialog Razor View Engine Controllers Global Filters Dynamic ViewModels New ActionResults JavaScript and AJAX JSON Binding Unobtrusive JavaScript jQuery Validation Model Validation .NET 4 DataAnnotations Improved ValidationAttribute support IValidatableObject Interface support Dependency Injection Improvements Support for Controllers, Views, Action Filters, Model Binders,…