Get started with Delegates

  • Module
  • 8 Units
Beginner
Developer
Higher Education Educator
K-12 Educator
Student
.NET
Visual Studio Code

Learn how to declare, instantiate, and invoke delegates for scenarios that require dynamic method invocation, such as callback methods and custom sorting or filtering.

Learning objectives

  • Explain the concept of delegates in C# and their benefits in terms of flexibility, extensibility, and decoupling.

  • Describe how to declare, instantiate, and invoke delegates using various methods, including named methods, anonymous methods, and lambda expressions.

  • Explain how delegates are used in sorting, callback, and other real-world scenarios.

  • Describe how strongly typed delegates like Action and Func simplify your code and improve readability.

  • Explain how variance in C# enhances flexibility in method signatures with delegates.

  • Implement delegates in a C# application.

Prerequisites

  • An installation of Visual Studio Code with the C# Dev Kit extension installed.

  • The ability to develop object-oriented programs in C# that implement classes, interfaces, class inheritance, and polymorphic behavior.

  • The ability to manage collections, structs, records, generics, dates and times, and anonymous types.

  • A basic understanding of file IO, JSON serialization, and asynchronous programming.