Wcf remaining

Naresh InformationTechnologiesTechnologies

Nagaraju BendeMCPD.NET Sr Consultant,Trainer

http://nbende.wordpress.com

Consuming WCF Services

VS.NET Role in building WCF Apps

Agenda – Session 4

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WCF Service Library & WCF Service

Data Contracts

<system.serviceModel> <services> <endpoint address = "http://localhost:8000/CustomerManager" binding = "basicHttpBinding" contract = "IContactManager"> </endpoint> </services> </system.serviceModel>

Addresses

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</system.serviceModel>

<system.serviceModel> <services> <endpoint address = "net.tcp://localhost:8001/CustomerManager/" binding = "netTcpBinding" contract = "IContactManager"> </endpoint> </services> </system.serviceModel>

Develop Real World WCF Service Library

WCFTESTCLIENT.exe / WCFSVCHost.exe


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Host in Windows Service

Configure more bindings

WCF Service using Web Template

Hosting in Web Server


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LinqToSql/ADO.NET Entities/WCF

Demo

IIS Hosting – simple 3 steps

1 Create Virtual Directory in IIS

Create .svc file for service

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2 Create .svc file for service implementation

3 Configuration of web.config for services

Web Programming using WCF

WCF for ASP.NET AJAX apps


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webHttpBinding new in 3.5, VS.NET role

SOAP, JSON, POX, REST styles

Demo

webHttpBinding

• New “web-friendly” WCF Binding in Fx 3.5– Allows for the development of RESTful services– Does not use SOAP envelopes– HTTP and HTTPS Transports Only

• Supports several wire formats:

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• Supports several wire formats:– XML– JSON– Binary (streams)

• JavaScript Object Notation• Format for bridging JavaScript and objects

– Easier for browsers than XML

• ASP.NET AJAX & other AJAX toolkits use it

What is JSON?

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• ASP.NET AJAX & other AJAX toolkits use it– Other web-aware clients also (Silverlight, etc.)

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• WCF AJAX support in Visual Studio – Script manager, VS Project Templates

• WCF automatically generates JS proxy• Usage pattern similar to existing one:

– Add service to Script Manager control

WCF / AJAX Integration

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– Add service to Script Manager control– Write JavaScript code to work with proxy

• Configuration not required– Via the WebScriptServiceHostFactory (.svc file)

SOAP, JSON, POX, REST styles

WebGet and WebInvoke


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UriTemplate in 3.5

Demo

[WebGet] And [WebInvoke]

• Binds a WCF operation to URI space and HTTP method

• Indicate the HTTP Method for the operation– WebGet – Don’t make me write it– WebInvoke – All verbs other than GET (Method

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– WebInvoke – All verbs other than GET (Method parameter takes in the name of the Verb)

• Other Parameters– BodyStyle – Indicates whether the Request/

Response are wrapped or not– RequestFormat – Json or Xml– ResponseFormat – Json or Xml– UriTemplate – Rich binding to URI

UriTemplate

• String that allows you to define the structure of the URI, as well as to define “Holes” – The “Holes” are variables– You Bind the template with parameters to

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– You Bind the template with parameters to fill the holes

• {productId} hole / variable gets bound to productId parameter in operation

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WCF REST Starter Kit

• Microsoft.ServiceModel.Web.dll– New features supporting RESTful services

• Visual Studio 2008 Templates– REST Collections/Singleton Services

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– Atom Feed/Atom Publishing Protocol– HTTP/POX Services

• REST Samples• Codeplex Project

– Released at PDC– Written by WCF team– Features may be included in .NET 4.0

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