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12. Delegates, Events, and Lambda Expressions

  • 2021
  • OriginalPaper
  • Chapter
Published in:
Authors
Andrew Troelsen
Phillip Japikse
Published in
Pro C# 9 with .NET 5
Publisher
Apress

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Abstract

This chapter delves into the intricacies of delegates, events, and lambda expressions in C# programming. It begins by explaining the historical context of callback mechanisms and their importance in graphical user interfaces. The text then explores the delegate type in .NET Core, highlighting its type-safe nature and ability to handle multicasting. It provides practical examples, such as creating a delegate to point to methods and using delegate types to define and respond to callbacks. The chapter also covers the C# event keyword, which simplifies event handling and ensures encapsulation. Additionally, it introduces anonymous methods and lambda expressions, showcasing how they can streamline event registration and provide concise syntax for handling events. The chapter concludes by demonstrating how to use lambda expressions with multiple parameters and how to integrate them into real-world applications. Throughout the chapter, the author emphasizes the importance of understanding the underlying mechanisms and provides clear, concise explanations that make complex topics accessible to developers.
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previous chapter Advanced C# Language Features
next chapter LINQ to Objects
Title
Delegates, Events, and Lambda Expressions
Authors
Andrew Troelsen
Phillip Japikse
Copyright Year
2021
Publisher
Apress
Book
Pro C# 9 with .NET 5

Print ISBN: 978-1-4842-6938-1

Electronic ISBN: 978-1-4842-6939-8

Copyright Year: 2021

DOI
https://doi.org/10.1007/978-1-4842-6939-8_12

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