[CLPE] Novidades do Asp.net mvc 2

Notas do Editor

• #4: Estimated Time: 2 minutesFor the entire life of ASP.NET it has been seen as a single framework that included both runtime and presentational aspects. This includes core features such as roles and globalization, as well as WebForms features such as master pages and user controls.
• #5: Estimated Time: 2 minutesWith the release of .NET Framework 3.5 SP1, ASP.NET started being seen as more modular. ASP.NET Core now represents just the runtime aspects of ASP.NET, and ASP.NET WebForms is simply a presentation option that sits on top of that runtime. With this, it becomes possible to introduce other presentation layer implementations on top of ASP.NET, such as the new ASP.NET MVC framework.While many who are beginning to investigate into ASP.NET MVC think that it is the replacement for WebForms, as you can see, it is simply another option for developing web applications using the ASP.NET runtime.
• #6: Estimated Time: 1 minuteWebForms has been the only option on the ASP.NET stack and provides a mature product that has proven successful for lots of developers. But it does have some weaknesses.
• #7: Estimated Time: 2 minutesThe level of abstraction that WebForms provides has a lot of benefits to it, but it doesn’t provide any framework-level guidance in terms of what should do what and when. Between your pages, master pages, user controls, server controls, and custom controls, you can end up with a mixture of HTML, data access code, and business logic.There are certainly methodologies/practices that can be employed with WebForms that can remedy that, but it becomes an implementation task of the developer, since the framework doesn’t provide any of that separation/guidance.
• #8: Estimated Time: 2 minutesThe control abstractions that WebForms provides are very powerful in that they neatly contain all of the UI and business logic needed so you can just place them within a page and go. The adverse side of that is that it can end up hiding complexity that you’d rather have control over. A common problem is viewstate[Advance Animation]. It isn’t viewstate’s fault that things like this can happen, but it can be very easy to consume a control that could end up hurting the performance of your application.In addition, many times the markup rendered by server controls aren’t always ideal and there is little control over that without having to redo its rendering completely.
• #9: Estimated Time: 2 minutesMVC is a design pattern that stands for Model-View-Controller. What is strives to do is separate the concerns of an application’s presentation layer by assigning specific roles to the three different components.The Controller is responsible for handling all user input. Once input has been received, the Controller will perform any operations/actions it needs to, which might include interacting with the Model.The Model represents the core concern/logic of the application. Once the Controller retrieves some model data and performs any work with the model/etc it needs to it constructs a presentation model that describes the model in terms the View can understand.The View is the visual representation of the model. It presents the model data to the actual user in a way that is meaningful. In a web application, this would typically be HTML.With these three pieces in place, your presentation layer becomes cleanly separated in such a way that each component can be developed/tested independently.