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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

A More Thorough Discussion: Introducing the Routed Events

WPF introduces a revolutionary way to generate and handle events, known as routed events. When a user’s interface element generates an event, the event passes along through the entire Visual Tree, rethrowing the event for each element in the tree. The WPF runtime can then understand what element first generated the event that is the actual handled event. Event handlers whose job is managing a routed event must include an object of type System.Windows.RoutedEventArgs in their signature. For a better understanding, consider the following basic XAML code that implements three buttons:

<StackPanel Button.Click="OnClick">    <Button Width="100" Height="30"            Content="Button ...

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Publisher Resources

ISBN: 9780134196664Purchase book