This document discusses new features in ASP.NET MVC 4 including WebAPI, task support for asynchronous controllers, database migrations, bundling and minification features to improve performance, and increased support for mobile development. It provides an overview and code examples of using the WebAPI framework for building RESTful services, content negotiation, routing, action parameters, and asynchronous processing using async and await.

1. ASP.NET MVC 4.0
By Ram Ayyalaraju
co-founder, CTO ShikshaCLUB.com
Twitter: @RamAyyalaraju
LinkedIn: https://www.linkedin.com/in/ramayyalaraju
Website: ShikshaCLUB.com
email: ram.ayyalaraju@shikshaclub.com

2. How?
• Using PPT
• Code Snippets and explanations
• Learn By doing
- Video library application
- Lab sessions
- learn by sharing
-

3. What is new in ASP.NET MVC 4?
• WebAPI
• Task Support for Sync controllers
• Data Base Migrations – What’s New?
• Bundling and Magnifications features – What is new?
• More support for mobile development
In this
Order

4. WebAPI
• To Embrace HTTP
• Light weight
• Scalable (caching)
• Interoperable(no plugins and works with any client )
• Flexible (custom model bindings, formatters and
filters)
• Can pass-through firewalls
• routes by http methods like get, post, put, delete verbs

5. Getting Started
• Create a WebAPI Project
• Create an ASP.NET Project
• Create Any Project!
Install NuGet Package
Install-package Microsoft.Asp.Net.WebApi.SelfHost
• Build example project with controllers, views
and basic class lib to work

6. Routing
• Routes by HTTP methods (Get, Post, Put,
Delete)
• Other Methods available via [AcceptWorps]
• Looks at the start of an action name

7. WebAPI
Routing cont...
• public class RouteConfig
• {
• public static void RegisterRoutes(RouteCollection routes)
• {
• routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
• routes.MapRoute(
• name: "Default",
• url: "{controller}/{action}/{id}",
• defaults: new { controller = "Home", action = "Index", id =
UrlParameter.Optional }
• );
• }
• }

8. Routing cont…
• Response in browser
• Response with cURL cmd line util
cURL Download url: http://curl.haxx.se/download.html
ex: http://localhost:1341/api/videos (controller name)
• WebAPI supports multiple Get methods with different
signatures, it’s not true with MVC
• Put/ Delete examples

9. WebAPI
Content Negotiation
• Core mechanism of HTTP
• Client specifies desired formats using Accept
hearder
• <<Diagram>>

10. WebAPI
Content Negotiation…cont
GlobalConfiguration.Configuration.Formatters
Count = 4
[0]: {System.Net.Http.Formatting.JsonMediaTypeFormatter}
[1]: {System.Net.Http.Formatting.XmlMediaTypeFormatter}
[2]:
{System.Net.Http.Formatting.FormUrlEncodedMediaTypeF
ormatter}
[3]:
{System.Web.Http.ModelBinding.JQueryMvcFormUrlEncod
edFormatter}

11. Action Parameters
• How Get, Post, Put, Delete works
• Primitive types (assumed not to be in message
body)
• Complex types (assumed to be in message
boday)
• Only Single model is allowed from message
boday
• <<Implementing PUT and POST by example>>

12. Async Awaite in MVC 4.0
• What is Async and Await
• Task Parallel Library
• Async Controls

13. Asycn Awit Example
• <<Example Code walk through >>

14. Async Controler
• AsyncControls base class
• <<How it’s used in MVC by Example>>