Pattern matching with objects

In Chapter 3, Controlling Flow, Converting Types, and Handling Exceptions, you were introduced to basic pattern matching. In this section, we will explore pattern matching in more detail.

Pattern matching 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:

1. In the PacktLibraryNet2 project/folder, add a new file named FlightPatterns.cs.
2. If you use Visual Studio, in FlightPatterns.cs, delete the existing statements, including the class named FlightPatterns, because we will define multiple classes, and none match the name of the code file.
3. In FlightPatterns.cs, add statements to define three types of passengers with different properties, as shown in the following code:

// All the classes in this file will be defined in the following namespace.
namespace Packt.Shared;
public class Passenger...