Pro C# 9 with .NET 5: Foundational Principles and Practices in Programming

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2021

A. Troelsen, P. JapiksePro C# 9 with .NET 5https://doi.org/10.1007/978-1-4842-6939-8_12

12. Delegates, Events, and Lambda Expressions

Andrew Troelsen¹   and Phillip Japikse²

(1)

Minneapolis, MN, USA

(2)

West Chester, OH, USA

 

Up to this point in the text, most of the applications you have developed added various bits of code to Program.cs as top-level statements, 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 ...