Pattern Matching with Objects

Learn about pattern matching by defining various flight passenger types and using switch expressions in C# 9 or later to calculate their flight costs.

We'll cover the following

Defining flight passengers
- Try it yourself
Enhancements to pattern matching in C# 9 or later
- Try it yourself

Now, we will explore pattern matching. Through pattern matching, we will witness how C# elegantly handles different scenarios, making it a versatile tool for developers.

Defining flight passengers

In this example, we will define some classes that represent various types of passengers on a flight, and then we will use a switch expression with pattern matching to determine the cost of their flight:

Step 1: In the PacktLibraryNetStandard2 project or folder, add a new file named FlightPatterns.cs.

Step 2: In FlightPatterns.cs, add statements to define three types of passenger with different properties, as shown in the following code:

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Introduction

Hello, C#! Welcome, .NET!

Speaking C#

Controlling Flow, Converting Types, and Handling Exception

Writing, Debugging, and Testing Functions

Building Your Own Types with Object-Oriented Programming

Implementing Interfaces and Inheriting Classes

Packaging and Distributing .NET Types

Working with Common .NET Types

Working with Files, Streams, and Serialization

Working with Data Using Entity Framework Core

Querying and Manipulating Data Using LINQ

Introducing Web Development Using ASP.NET Core

Building Websites Using ASP.NET Core Razor Pages

Building Websites Using the Model-View-Controller Pattern

Building and Consuming Web Services

Building User Interfaces Using Blazor

Conclusion

Pattern Matching with Objects

Defining flight passengers