Skip to Main Content
Visual Basic 2015 Unleashed
book

Visual Basic 2015 Unleashed

by Alessandro Del Sole
July 2015
Intermediate to advanced content levelIntermediate to advanced
1300 pages
87h 27m
English
Sams
Content preview from Visual Basic 2015 Unleashed

Event-Based Asynchrony and Callbacks

A much better approach is moving the long-running operation into a separate thread, so that the UI can remain responsive while the other thread executes the operation. Lots of classes in the .NET Framework, especially those whose job is interacting with the Web and with networks-expose event-based asynchrony through methods that launch and execute an operation on a separate thread and raise an event when it is completed, passing the result to the caller via a callback. The WebClient class has an asynchronous counterpart of DownloadString, called DownloadStringAsync, that you can use to execute the code on a separate thread and wait for the query result via a callback. The following code demonstrates how to ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Beginning Visual Basic 2015

Beginning Visual Basic 2015

Bryan Newsome

Publisher Resources

ISBN: 9780134196664Purchase book