Arrays in C#: Create, Declare and Initialize the Arrays

Learn how to create, declare and initialize arrays in C# with simple, practical examples.

What is an Array?

An array is a fixed-size collection of elements of the same data type, stored in contiguous memory and accessed using a zero-based index.

Declaring an Array

An array is declared by specifying the element type followed by square brackets, such as int[] numbers, which simply tells the compiler the variable will hold a collection of integers.

Initializing an Array

Arrays can be initialized at the time of declaration using curly braces, or created with a fixed size using the new keyword and filled in afterward.

Accessing Array Elements

Individual elements are accessed using their index inside square brackets, and since indexing starts at zero, the first element is always at position 0.