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CHAPTER 11 ■ WORKING WITH DATA 369ramrameshreddy.blog.comFigure 11-3. Sample portfolio using version 1 of the serviceFigure 11-4. Sample quote using version 1 of the serviceOn the other hand, if the client is aware of the updated service and wants to consumeversion 2, then as you can see in Figure 11-5 and Figure 11-6 there are more data membersreturned by each of the operations. To implement this new version, include theQuoteService2.cs file in the solution instead of QuoteService1.cs.Also note that no elements on the service end have changed in the sample—only theclient elements have been changing to simulate a client that either consumes the old versionor consumes the new version of the service.Figure 11-5. Sample portfolio using version 2 of the serviceramrameshreddyramrameshreddyFigure 11-6. Sample quote using version 2 of the service
amrameshreddy.blog.com370 CHAPTER 11 ■ WORKING WITH DATAramrameshreddy.blog.comSummaryIn conclusion, for any data to be passed to or from a service, first it needs to be serialized.Although both .NET and ASP.NET in general support serialization, WCF truly extends this conceptand makes it easy to implement. Of the various options you examined, data contracts arethe default and one of the most flexible serialization engines designed with change and versioningin mind. The WCF runtime flexibility allows you to switch to legacy support whenrequired.The ability to map your business components to data members in a natural OOP paradigmis a powerful feature. This makes the development, testing, and maintenance of datacontracts along with versioning intuitive and easier. You also examined the powerful ability tofilter the messages based on one or more criteria, allowing you to support scenarios, whichearlier would require a lot of effort.Today’s needs demand application components that are available across the organization.The need for collaboration, online or offline, is the mandate for all companies. The nextchapter will cover the aspects of developing peer-to-peer computing with WCF.ramrameshreddyramrameshreddy
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amrameshreddy.blog.comTHE EXPERT’
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amrameshreddy.blog.comPro WCF: Prac
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amrameshreddy.blog.comramrameshredd
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amrameshreddy.blog.comApplying Beha
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amrameshreddy.blog.comxii ■CONTEN
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amrameshreddy.blog.comxiv ■CONTEN
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amrameshreddy.blog.comxviii ■FORE
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amrameshreddy.blog.comxx ■ABOUT T
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amrameshreddy.blog.comxxviii ■INT
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amrameshreddy.blog.com4 CHAPTER 1
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amrameshreddy.blog.com426 APPENDIX
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amrameshreddy.blog.com456 ■INDEXr
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