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XML Web Services in Visual Studio ® .NET

XML Web Services in Visual Studio ® .NET. Carlotta Eaton (www.nr.vccs.edu/eaton) Associate Professor of IST New River Community College Slides by Microsoft Modified by Carlotta Eaton. Agenda. Web Service Infrastructure Web Services in Visual Studio .NET Hardcore Web Services.

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XML Web Services in Visual Studio ® .NET

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  1. XML Web Services in Visual Studio® .NET Carlotta Eaton (www.nr.vccs.edu/eaton) Associate Professor of IST New River Community College Slides by Microsoft Modified by Carlotta Eaton

  2. Agenda • Web Service Infrastructure • Web Services in Visual Studio .NET • Hardcore Web Services

  3. Session Prerequisites • Familiarity with Client/Server or Web Development Level 200

  4. Agenda • Web Service Infrastructure • Web Services in Visual Studio .NET • Hardcore Web Services

  5. ASMX Web Service InfrastructureWhat makes a Web Service? • Web Service (ASMX in ASP .NET) • Invoke Web Service methods

  6. ASMX WSDL Web Service InfrastructureWhat makes a Web Service? • Web Service (ASMX in ASP+) • Invoke Web Service methods • Web Service Description Language (WSDL) • Describe Web Services • Describes dependencies (e.g., DataSets / XSD) XSD

  7. ASMX WSDL WSDL DISCO Web Service InfrastructureWhat makes a Web Service? • Web Service (ASMX in ASP+) • Invoke Web Service methods • Web Service Description Language (WSDL) • Describe Web Services • Describes dependencies (e.g., DataSets / XSD) • Discovery Documents (DISCO) • Publish Web Services XSD

  8. ASMX WSDL WSDL DISCO DISCO UDDI Web Service InfrastructureWhat makes a Web Service? • Web Service (ASMX in ASP+) • Invoke Web Service methods • Web Service Description Language (WSDL) • Describe Web Services • Describes dependencies (e.g., DataSets / XSD) • Discovery Documents (DISCO) • Publish Web Services • UDDI XSD

  9. Web Service InfrastructureProtocols • Basic: HTTP Get and HTTP Post • Primitives (integers, strings, etc) • Arrays of primitives • Default: Simple Object Access Protocol (SOAP) • Structures • Enumerations • Classes • XML DataSets • Arrays of anything

  10. Agenda • Web Service Infrastructure • Web Services in Visual Studio .NET • Hardcore Web Services

  11. Web Services in Visual Studio .NETTools • On the Server Side • Generates WSDL • Generates .vsdisco • Generates HTML text page • Supports breakpoints, tracing, etc. • On the Client Side • Generates proxy class with sync and async calls • Supports “Step-Into” across web service call

  12. Agenda • Web Service Infrastructure • Web Services in Visual Studio .NET • Hardcore Web Services

  13. Hard Core Web ServicesASP .NET Intrinsics • Request • Server Variables (Host Address, Host Name) • Cookies • Security (Client Certificate, Authentication, Encryption) • User • Identity • Role • Session and Application • State • Response • Cookies • Cache

  14. Hard Core Web ServicesSecurity • Basic, Digest, Passport, Kerberos, and Windows authentication • “Roll your own” authentication • HTTPS / SSL encryption • Supports many business models • Secure ecommerce transactions • Pay per use • Subscription

  15. Hard Core Web ServicesAsynchronous Calls • Synchronous Programming Model • Foo(Param1, Param2) As String • Asynchronous Programming Model • BeginFoo(Param1, Param2, Callback) • Callback(AsyncResult) • EndFoo(AsyncResult) As String

  16. Hard Core Web ServicesSOAP Headers - Server • Make a Class That Inherits SoapHeader • Add Custom Properties • Associate This With Your Web Service Public Class MyHeader : Inherits SoapHeader Public Username As String Public Password As String End Class

  17. Hard Core Web ServicesSOAP Headers - Client • Create Instance of the Header Class • Populate With Values • Attach To Web Service Object • Call Method WebServ ws = new WebServ(); MyHeader a = new MyHeader(); a.Username = "admin"; a.Password = "password"; ws.MyHeader = a; ws.DoSomething();

  18. Hard Core Web ServicesSoapExtension • Used for More Advanced Functionality • Intercept Calls to a Web Service • Pre and Post Processing

  19. Session Summary • Web Services Are The Building Blocks For The Next Generation Of The Internet • Gives Client Access to any kind of Data • Make Business-to-Business Easy • Visual Studio .NET Provides Great Tools

  20. For More Information… • MSDN Web site at • msdn.microsoft.com • Microsoft® Official Curricula (MOC) • MOC 2063 • Building ASP .NET Applications • MOC 2145 • Programming the Microsoft .NET Framework with Visual Basic® .NET • MOC 2349 • Programming the Microsoft .NET Framework with C#

  21. MSDNEssential Resources for Developers Subscription Services Library, Professional, Universal Delivered via CD-ROM, DVD, Web OnlineInformation MSDN Online, MSDN Flash Training & Events MSDN Training, Tech-Ed, PDC, Developer Days, MSDN/Onsite Events Print Publications MSDN Magazine MSDN News MembershipPrograms MSDN User Groups

  22. Return Data from a Web ServiceDemonstration #1

  23. Questions And Answers

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