# Array Basics

Create C# arrays, read and change their elements by index starting at 0, and use Length to find the last one.

![Cheat sheet: Array Basics](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/557ccd7bddfb4660801ced624ced9ccf.webp)

- Category: C#
- Level: Novice
- Tags: Array Index (c-sharp), Array Initializer (c-sharp), Array Length (c-sharp), Collection Expression, c-sharp, IndexOutOfRangeException
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/arrays-in-csharp-array-basics-cheat-sheet