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

Exception Handling

Handling exceptions is a crucial topic in parallel programming. The problem is that multiple tasks that run concurrently could raise more than one exception concurrently, and you need to understand what the actual problem is. The .NET Framework 4.6 offers the System.AggregateException class that wraps all exceptions that occurred concurrently into one instance. Such class then exposes, over classic properties, an InnerExceptions collection that you can iterate for checking which exceptions occurred. The following code demonstrates how you catch an AggregateException and how you iterate the instance, starting two tasks that attempt to access two files that do not exist:

Dim aTask = Task.Run(Sub() ...

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