Abstract
Up to this point in the text, most of the applications you developed added various bits of code to Main(), which, in some way or another, sent requests to a given object. However, many applications require that an object be able to communicate back to the entity that created it using a callback mechanism. While callback mechanisms can be used in any application, they are especially critical for graphical user interfaces in that controls (such as a button) need to invoke external methods under the correct circumstances (when the button is clicked, when the mouse enters the button surface, and so forth).
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© 2010 Andrew Troelsen, Vidya Vrat Agarwal
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(2010). Delegates, Events, and Lambdas. In: Pro VB 2010 and the .NET 4 Platform. Apress. https://doi.org/10.1007/978-1-4302-2986-5_11
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DOI: https://doi.org/10.1007/978-1-4302-2986-5_11
Publisher Name: Apress
Print ISBN: 978-1-4302-2985-8
Online ISBN: 978-1-4302-2986-5
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