Microsoft 9GD00001 manual Microsoft Visual Studio 2010 a Beginner’s Guide

328Microsoft Visual Studio 2010: A Beginner’s Guide

put http://localhost:8080/WcfDemo.CustomerService.svc into the Address box. In the deployed service, the service name might not be WcfDemo.CustomerService.svc as shown in this demo. To find out what the real service name file should be, navigate to the physical directory where the service was deployed to and use the file name of the *.svc file. Sometimes, you’ll need to use Web services by third parties or another organization in your company. In those cases, you’ll get the address to use from a person in the other organization or read their documentation to learn what address to use. If you add your own address, click Go to get more information on the Web service.

After either clicking Discover or adding an address and clicking Go, you’ll have one or more services in the Services list. At this point, if you receive an error, it will be because the address is incorrect, the service is experiencing an outage, or (in the case of referencing a service in your own project) the service won’t compile. First check the address if you entered it yourself. If you are referencing a project in your solution, go back and recompile the Web Service project to make sure it builds, fix any problems, and try to create the service reference again. Once you’ve ensured that you’ve corrected all the problems on your side of the wire, contact whoever owns the Web service to troubleshoot the problem.

When a Web service can be communicated with successfully, you’ll see the list of services. You can drill down on each service until you find the interface for the service you’re interested in. In Figure 11-11, the ICustomerService is selected, which displays all available operations. Looking back at the previous discussion of creating the CustomerService, you can see the interface that was created and the methods. If you don’t see an interface or a method, check the attributes in the code to ensure the interface has a ServiceContract attribute and that any methods that should be exposed have an OperationContract attribute.

The Web service will create a proxy, which is a class that communicates with the Web service, in your project, using the default namespace declared in the Properties for your project. The namespace in the Add Service Reference defaults to Service1, and you’ll want to change that to something meaningful, such as CustomerService, as shown in Figure 11-11. This will result in a proxy class created in MyProjectNamespace.CustomerService. This is important to know because you will need to create an instance of the proxy and must know the namespace that the proxy resides in. Click OK to create the service reference such as the one shown in Figure 11-12.

As you can see in Figure 11-12, the project has a new folder, named Service References. The CustomerService reference under ServiceReferences is named after the namespace you specified in the Add Service Reference window.