101 Microsoft® Visual Basic® .NET Applications

Application #84. Asynchronous Calls

This sample application demonstrates how to use threads to create a responsive application while executing a processor-intensive or lengthy task in the background. This application allows the user to fire a long-running process on various types of threads. The main form contains three command buttons. The first button runs the task on the same thread as the main application, effectively blocking the user from interacting with the main form until the task is finished. The second and third buttons run the task on a second thread, allowing the user to continue interacting with the main form. The difference is that the second button runs the task on a thread from the worker pool, whereas the third button uses ...