Feb 10, 2018 · As of C# 12, you can now also initialize arrays with collection expressions. Note the spread operator .., which will take an IEnumerable and flatten its items inside a collection expression. Some examples: Just a single element. int[] array = [1]; 100 elements where each element represents its index. int[] array = [.. Enumerable.Range(0, 100)];

Aug 6, 2009 · Since C# 12, we can use collection expressions: // Create an array: int[] a = [1, 2, 3, 4, 5, 6, 7, 8]; // Create a jagged 2D array: int[][] twoD = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]; // Create a jagged 2D array from variables: int[] row0 = [1, 2, 3]; int[] row1 = [4, 5, 6]; int[] row2 = [7, 8, 9]; int[][] twoDFromVariables = [row0, row1, row2];

Jan 4, 2012 · Performance Rule CA1825: Avoid allocating zero-length arrays. Rule discription: Initializing a zero-length array leads to an unnecessary memory allocation. Instead, use the statically allocated empty array instance by calling the Array.Empty method. In your case: var a = Array.Empty<string>();

6 days ago · What Are Arrays in C#? An array in C# is a fixed-size, zero-indexed collection of elements of the same data type. Being zero-indexed means the first element is accessed with index 0, the second with index 1, and so on. Arrays are reference types that inherit from the System.Array class, which provides various methods and properties to work with ...

Dec 21, 2023 · One of the simplest ways to answer the burning question, “how to initialize an array in C#”, involves providing initial values at the time of declaration. It’s equivalent to simultaneously making a shopping list and buying those items.

May 14, 2024 · The aim here is to show you all the possible syntaxes to initialize array in C#. Below is the list of possible array declarations and initializations: string[] array = new string[2]; string[] array = new string[] { "A", "B" }; string[] array = { "A" , "B" }; string[] array = new[] { "A", "B" }; string[] array = ["A", "B"];

Apr 1, 2025 · Learn All About C# Array in This In-depth Tutorial. It Explains How To Declare, Initialize And Access Arrays Along with Types And Examples Of Arrays in C#.

Jul 13, 2022 · In this article, we have learned how to initialize arrays in C# using different techniques. Additionally, we’ve shown several tests to prove the size of our initialized arrays. Ready to take your skills to the next level?

Jun 25, 2024 · In this blog post, we will explore various methods for quickly initializing arrays in C#. 1. Initializing Arrays with Specific Values. You can initialize an array with specific values using array initializers. Here's an example: int[] numbers = new int[] { 1, 2, 3, 4, 5 }; In this example, we create an integer array numbers and initialize it ...

Jun 25, 2024 · The most common way to initialize an array in C# is by specifying the size of the array and assigning values to each element individually. You can also initialize an array with values directly at the time of declaration using array initializer syntax. For multi-dimensional arrays, you can initialize them by specifying the values for each dimension.