Combine two arrays in C#

Firstly, declare and initialize two arrays −

int[] arr1 = { 37, 45, 65 }; int[] arr2 = { 70, 89, 118 };

Now create a new list −

var myList = new List<int>(); myList.AddRange(arr1); myList.AddRange(arr2);

Use the AddRange() method the arrays into the newly created list.

myList.AddRange(arr1); myList.AddRange(arr2);

Now convert the list into array as shown below −

Example

 Live Demo

using System; using System.Collections.Generic; class Demo {    static void Main() {       int[] arr1 = { 37, 45, 65 };       int[] arr2 = { 70, 89, 118 };       // displaying array1       Console.WriteLine("Array 1...");       foreach(int ele in arr1) {          Console.WriteLine(ele);       }       // displaying array2       Console.WriteLine("Array 2...");       foreach(int ele in arr2) {          Console.WriteLine(ele);       }       var myList = new List<int>();       myList.AddRange(arr1);       myList.AddRange(arr2);       int[] arr3 = myList.ToArray();       Console.WriteLine("Combined array elements..");       foreach (int res in arr3) {          Console.WriteLine(res);       }    } }

Output

Array 1... 37 45 65 Array 2... 70 89 118 Combined array elements.. 37 45 65 70 89 118