TAILIEUCHUNG - Visual studio 2010 part 33

Việc thực hiện customerservice tương tự như những gì bạn đã thấy trong chương trước. Sự khác biệt là thực hiện được trong một dịch vụ web, mà cần phải được tiêu thụ khác nhau. Chúng tôi sẽ sớm đến được với các phần của chương này cho thấy làm thế nào để tiêu thụ một dịch vụ Web, nhưng bạn phải hiểu rằng một dịch vụ web là một thành phần mà bạn giao tiếp với hơn một mạng. | 314 Microsoft Visual Studio 2010 A Beginner s Guide Where custID Select cst .SingleOrDefault If Not customer Is Nothing Then customer End If End Sub End Class The implementation of CustomerService is similar to what you ve seen in previous chapters. The difference is that the implementation is in a Web service which must be consumed differently. We ll soon get to the section of this chapter that shows how to consume a Web service but you must understand that a Web service is a component that you communicate with over a network. In previous chapters you ve seen code that works with data integrated with application code. However Web services must be hosted by a server such as Internet Information Services IIS and consuming code must connect and communicate through calls to IIS. The next section points you in the right direction about hosting a Web service in IIS. Hosting a WCF Service The VS development environment will automatically host your service but eventually you ll need to deploy your service to Internet Information Services IIS which is the Web server that hosts .NET applications. The instructions included in this section are general guidance on how the deployment process works. It is very likely that subsequent operating system patches and service packs could change the results for you. It is also possible that the particular operating system and IIS configuration on your computer is different. Additionally the behavior of software on other operating systems such as Windows Server 2003 and Windows Server 2008 can differ in subtle but significant ways. As such problems are unrelated to VS itself you should consult your operating system documentation on how to properly configure IIS and operating system security. Although operating system behavior is not a function of VS the guidance below is intended to point you in the right direction. Chapter 11 Deploying Web Services with WCF 315 Following .

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