How to access elements from a rectangular array in C#?

To access elements from a rectangular array, you just need to set the index of which you want to get the element. Multi-dimensional arrays are also called rectangular array −

a[0,1]; // second element

The following is an example showing how to work with a rectangular array in C# and access an element −

Example

using System; namespace Demo {    class Program {       static void Main(string[] args) {          int[,] a = new int[3, 3];          a[0,0]= 10;          a[0,1]= 20;          a[0,2]= 30;          a[1,0]= 40;          a[1,1]= 50;          a[1,2]= 60;          a[2,0]= 70;          a[2,1]= 80;          // accessing element          a[2,2]= 90;          int i, j;              for (i = 0; i < 3; i++) {             for (j = 0; j < 3; j++) {                Console.WriteLine("a[{0},{1}] = {2}", i, j, a[i,j]);             }          }          int ele = a[0,1];          Console.WriteLine("Second element: "+ele);          Console.ReadKey();       }    } }