# Inheritance and Constructors

When a base class has a constructor with parameters, every derived class must call it with base(...). The base class's constructor always runs first.

![Cheat sheet: Inheritance and Constructors](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/5c1a6e08e77940b1b4e3a05feb279565.webp)

- Category: C#
- Level: Journeyman
- Tags: base (c-sharp), Constructor Chaining (c-sharp), c-sharp, OOP
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/introduction-to-inheritance-in-csharp-inheritance-and-constructors-cheat-sheet