Section 7.3 Web Services in ASP.NET with VB

Learning Objectives

After you have completed this section, you should be able to

• explain what a web service is.
• create and publish WCF web services using XML, JSON, SOAP, and REST.
• create a client that can consume WCF web service.
• use WCF web services with Windows and web applications.
• use session tracking in WCF web services.
• pass user-defined types to a WCF web service.

Activities

• Carefully read the learning objectives.
• Find some examples of web services in Visual Basic and write a summary of the function and implementation of each website.
• Watch the presentation for the section;
• Read online Chapter 25, Web Services in Visual Basic.
• Find answers to the study questions below.
• Do exercises 25.3 and 25.6 of Chapter 25.

Study Questions

1. What is a web service?
2. What does WCF stand for?
3. What are WCF web services?
4. What are the three key components of a WCF service?
5. What does SOAP stand for? What does the SOAP protocol do?
6. What is REST?
7. What are RESTful web services?
8. What is JSON? What can it be used for?
9. What are SOAP messages?
10. What is the structure of a SOAP message?
11. What does a SOAP request message do?
12. What does a SOAP response message do?
13. How do you develop and publish a WCF web service?
14. How do you consume a WCF web service?
15. How do you use XML, JSON, SOAP, and REST in creating WCF web services?
16. How do you create, publish, and consume a REST-based XML web service?
17. How do you create, publish, and consume a SOAP-based WCF web service?
18. How do you create, publish, and consume a REST-based JSON web service?
19. How do you use session tracking in SOAP-based WCF web services?
20. What is WSDL? What can WSDL be used for?
21. How do you pass user-defined types to a WCF web service? What are user-defined types in this context?

Review

Do the self-review exercises at the end of Chapter 25.

Summary

Read the online Chapter 25 summary.