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Introduction to ASP.NET MVC

Introduction to ASP.NET MVC. Chapter 1 ASP.NET MVC Development. Contents. The case for ASP.NET MVC Tooling up. 1. The Case for ASP.NET MVC. What is ASP.NET MVC? ASP.NET Web Forms – issues Web development – state of play ASP.NET MVC architecture ASP.NET MVC benefits

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Introduction to ASP.NET MVC

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  1. Introduction to ASP.NET MVC Chapter 1 ASP.NET MVC Development

  2. Contents • The case for ASP.NET MVC • Tooling up 2

  3. 1. The Case for ASP.NET MVC • What is ASP.NET MVC? • ASP.NET Web Forms – issues • Web development – state of play • ASP.NET MVC architecture • ASP.NET MVC benefits • ASP.NET Web Forms or MVC? 3

  4. What is ASP.NET MVC? • ASP.NET MVC is a web development platform from Microsoft • A significant evolution for web developers using the Microsoft platform • ASP.NET MVC emphasises the best of the ASP.NET platform and agile development: • Clean architecture • Design patterns • Testability 4

  5. ASP.NET Web Forms – Issues • Traditional ASP.NET Web Forms were a great step forward when they first emerged • Much better than classic Active Server Pages (ASP) • Simple, especially for relatively small applications • However, there are some significant issues with ASP.NET Web Forms • ViewState transmission can be onerous • The ASP.NET page life cycle is complicated and subtle • The ASP.NET code-behind model encourages developers to mix presentation logic and application logic • Web Forms attempt to encapsulate the intricacies of HTML and HTTP, but this can sometimes be an obstacle • It's difficult to automate unit testing for ASP.NET Web Forms 5

  6. Web Development – State of Play • Key features of Web development today: • Ajax • Web standards • REST (Representational State Transfer) • Agile and test-driven development 6

  7. ASP.NET MVC Architecture • The controller is probably the most interesting player • Processes user input • Works with the model to handle the request • Manages application logic • E.g. navigating a multi-step process, authentication, etc. • Prepares the data to be displayed • This is known as "view data" in ASP.NET MVC Controller Model HTTP Request View Response HTML View data 7

  8. ASP.NET MVC Benefits • Here are the key benefits of ASP.NET MVC: • Model-View-Controller architecture • Extensibility (ASP.NET MVC components are pluggable) • Reusable and consistent model classes • Testability • Flexible routing system • Tight control over HTML (standards-compliant) • Leverages strengths of the ASP.NET platform • Simplified JavaScript/Ajax integration 8

  9. ASP.NET Web Forms or MVC? • ASP.NET Web Forms is still appropriate for: • Small Web applications • MVC would be overkill • Simple Intranet-style Web applications • Fast networks, so you don't care about ViewState transmission overheads • Quick-to-market apps • Maybe you don't really care about unit testing or long-term maintenance • Web apps where you have a lot of corporate data • Where you just want to display the data in data grids • Scenarios where the drag-and-drop simplicity of Web Forms outweighs its weaknesses • A word about migration… • You can mix ASP.NET WebForms and MVC in the same Web app • Allows you to migrate WebForms to MVC piecemeal, if you want to 9

  10. 2. Tooling Up • Core development tools • MVC4 • Downloading and installing MVC 4 10

  11. Core Development Tools • The following tools include ASP.NET MVC by default: • Visual Studio 2010 (any edition) • Visual Web Developer 2010 Express (free) • The following tools don't include ASP.NET MVC by default (you must download ASP.NET MVC separately from http://www.asp.net/mvc/) • Visual Studio 2008 with SP1 (any edition) • Visual Web Developer 2008 Express with SP1 (free) 11

  12. MVC4 • ASP.NET MVC 4 builds on ASP.NET MVC 1, 2, and 3 • Adds features to simplify code and support deeper extensibility • Installs side-by-side with ASP.NET MVC 2 • Key new features: • Expressive views, including the new Razor view engine • Internet and Intranet project templates • HTML 5 support • Extensible scaffolding with MvcScaffold integration • Hooks for Dependency Injection and global action filters • JavaScript and Ajax improvements • Model validation improvements • Controller improvements • Page caching and data caching 12

  13. Downloading and Installing MVC 4 • Download available from MVC 4 home page • http://www.asp.net/mvc/mvc4 • We'll install via installer executable • C:\AspNetMvc4\Products\AspNetMVC4ToolsUpdateSetup.exe • Effect: • Adds new ASP.NET MVC 4 project templates • Extends existing APIs, adds new APIs 13

  14. Summary • The case for ASP.NET MVC • Tooling up 14

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