Convert an Array to a List in C#

This post will discuss how to convert an array to a list in C#.

1. Using `Enumerable.ToList()` method

The simplest solution is to call the Enumerable.ToList() method from System.Linq namespace which creates a List<T> from an IEnumerable<T>. It returns a List<T> that contains elements from the input sequence.

using System;

using System.Collections.Generic;

using System.Linq;

public class Example

{

public static void Main()

{

int[] array = { 1, 2, 3, 4, 5 };

List<int> list = array.ToList();

// List<int> list = array.OfType<int>().ToList();

// List<int> list = array.Cast<int>().ToList();

Console.WriteLine(String.Join(",", list));

}

Output: 1,2,3,4,5

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2. Using List Constructor

We can also use the constructor of List<T> which accepts IEnumerable<T> as an argument and initializes a new instance of the List<T> class that contains elements copied from the specified collection.

using System;

using System.Collections.Generic;

public class Example

{

public static void Main()

{

int[] array = { 1, 2, 3, 4, 5 };

List<int> list = new List<int>(array);

Console.WriteLine(String.Join(",", list));

}

Output: 1,2,3,4,5

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3. Using `List.AddRange()` method

Finally, we can call the AddRange() method, which adds the specified collection elements at the end of the List.

using System;

using System.Collections.Generic;

public class Example

{

public static void Main()

{

int[] array = { 1, 2, 3, 4, 5 };

List<int> list = new List<int>();

list.AddRange(array);

Console.WriteLine(String.Join(",", list));

}

Output: 1,2,3,4,5

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That’s all about converting an array to a list in C#.

Convert an Array to a List in C#

1. Using Enumerable.ToList() method

2. Using List Constructor

3. Using List.AddRange() method

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1. Using `Enumerable.ToList()` method

3. Using `List.AddRange()` method