Windows Azure

Custom Software Development MobileMiddleware

Web Development with WCF Web API ASP.NET Web API

Dipl.-Ing Damir Dobric

Lead Architectdaenet

Microsoft Most Valuable Professional

Email: bahrudin.hrnjica@daenet.euBlog: bhrnjica.net

Microsoft vTSP – GermanyTechnology Advisor in Business Platform Division – Microsoft Corp.Microsoft Most Valuable Professional

Email: damir.dobric@daenet.comEmail: b-dadobr@microsoft.com

Dipl.-Ing Bahrudin Hrnjica

Senior Software Developerdaenet

Windows Azure

Custom Software Development MobileMiddleware

Agenda

• From WCF to Asp.NET Web API• Protocols in Web• Routing in Web API• HttpClient

– Formatters and Custom Formatters– Filters and Custom Filters

• Demos through every subtitles• Recap• Q/A

Windows Azure

Custom Software Development MobileMiddleware

ASP.NET Web API

Windows Azure

Custom Software Development MobileMiddleware

From WCF to ASP.NET Web API• First apear as WCF Web API• HTTP related• WCF -wider that HTTP (TCP, Named Pipe,

WinService, etc)• ASP.NET is closer technology• Can be treated as part of .NET vNext

Windows Azure

Custom Software Development MobileMiddleware

ASP.NET Web API

• Modern HTTP programming model• HTTP related• Full support for ASP.NET Routing• Content negotiation and custom formatters• Model binding and validation• Filters• Query composition• Code-based configuration• Self host

Windows Azure

Custom Software Development MobileMiddleware

Demo: Simple ASP.NET Web API App

Integration in MVC 4

Invoke operation

from browser

Add opeartion with params

GET, POST, PUT, DELETE

Windows Azure

Custom Software Development MobileMiddleware

Web Protocols

• SOAP• REST• SOAP Contract vs. Contract based on

document Three (REST)• Formatting (HTML, OData, etc.)

Windows Azure

Custom Software Development MobileMiddleware

Routing

• Web API uses HTTP methods• MVC-style Routing is still avaliable• Controller handles HTTP requests• Set routing to

HttpSelfHostConfiguration

Windows Azure

Custom Software Development MobileMiddleware

Routing

HTTP Method URI Path Action Parameter

GET api/products GetAllProducts (none)

GET api/products/4 GetProductById 4

DELETE api/products/4 DeleteProduct 4

POST api/products (no match) -

Windows Azure

Custom Software Development MobileMiddleware

Demo: Simple routing

Get with and without params

Put and Post sample

Name routing resolution

Sample delete

method

Windows Azure

Custom Software Development MobileMiddleware

HttpClient

Windows Azure

Custom Software Development MobileMiddleware

HttpClient

• Modern HttpCLient for .NET• NuGet packages– System.Net.System– System.Net.Http.Formatting– System.Json

• Hady when using in JavaScript code

Windows Azure

Custom Software Development MobileMiddleware

Formatters

• XML• JSON• Custom

Windows Azure

Custom Software Development MobileMiddleware

Demo: Using Formatters

XML Formatter

JSON formatter

vCards Custom

Formatter implementati

on

vCad Formatter

Windows Azure

Custom Software Development MobileMiddleware

Filters

• Custom Validation Filter• Custom Error Filter

Windows Azure

Custom Software Development MobileMiddleware

Demo: Using Filters

Filters sample Custom Filters

Custom error filters

Custoim validation

Windows Azure

Custom Software Development MobileMiddleware

RECAP

Windows Azure

Custom Software Development MobileMiddleware

Recap

• New way of building REST based web application

• Easy of using• Built on top of APS.NET MVC• Routing convention• HTTP Standard method GET, POST, PUT,

DELETE• Still support MVC routing methods• Different Formatters: XML, JSON, Custom• Different Filters

Windows Azure

Custom Software Development MobileMiddleware

Contact• More info about Web API

– http://asp.net/web-api - official page– http://blogs.msdn.com/b/henrikn/

• Blogs:– Damir‘s Blog: http://developers.de/blogs/damir_dobric/default.aspx– Bahrudin‘s Blog: http://bhrnjica.net

• Emails:– damir.dobric@daenet.eu– bahrudin,.hrnjica@daenet.eu