In this chapter, you will learn how to:
Use asynchronous communications to invoke XML Web services operations.
Use callback methods to process the results from asynchronous XML Web service operations.
Use .NET synchronization mechanisms to process the results from asynchronous XML Web service operations.
So far, our XML Web service client applications have called XML Web service methods and then waited for a response, blocking application processing until the Web method returns. Known as synchronous communications, this approach is the most common and easily understood way to consume XML Web services. However, sometimes you might want your client application to continue processing other tasks ...