Exploring the Differences Between Classes and Records in C# and When to Use Each

In C#, classes have long been the go-to choice for defining types, encapsulating behavior, and organizing code. However, with the introduction of C# 9.0, a new kid on the block emerged — the record. In this blog post, we’ll delve into the distinctions between classes and records, when to use each, and practical examples of their syntax and implementation.

Classes in a Nutshell

Classes in C# are the fundamental building blocks for object-oriented programming. They encapsulate data and behavior, promoting encapsulation and modularity in code. Traditionally, classes have been mutable, allowing their properties to be modified after instantiation.

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    public Person(string firstName, string lastName)
    {
        FirstName = firstName;
        LastName = lastName;
    }
}

Records: The Newcomer with a Twist

C# records, introduced in C# 9.0, offer a concise syntax for defining immutable data types. Records are specifically designed for scenarios where data is the primary concern, providing built-in support for immutability, equality, and deconstruction.

public record PersonRecord(string FirstName, string LastName);

Key Differences Between Classes and Records