C# Multidimensional Array

by Online Tutorials Library July 14, 2022

C# Multidimensional Arrays

The multidimensional array is also known as rectangular arrays in C#. It can be two dimensional or three dimensional. The data is stored in tabular form (row * column) which is also known as matrix.

To create multidimensional array, we need to use comma inside the square brackets. For example:

         int[,] arr=new int[3,3];//declaration of 2D array         int[,,] arr=new int[3,3,3];//declaration of 3D array 

C# Multidimensional Array Example

Let’s see a simple example of multidimensional array in C# which declares, initializes and traverse two dimensional array.

 using System; public class MultiArrayExample {     public static void Main(string[] args)     {         int[,] arr=new int[3,3];//declaration of 2D array         arr[0,1]=10;//initialization         arr[1,2]=20;         arr[2,0]=30;          //traversal         for(int i=0;i<3;i++){             for(int j=0;j<3;j++){                 Console.Write(arr[i,j]+” “);             }             Console.WriteLine();//new line at each row         }     } } 

Output:

0 10 0 0 0 20 30 0 0

C# Multidimensional Array Example: Declaration and initialization at same time

There are 3 ways to initialize multidimensional array in C# while declaration.

We can omit the array size.

We can omit the new operator also.

Let’s see a simple example of multidimensional array which initializes array at the time of declaration.

 using System; public class MultiArrayExample {     public static void Main(string[] args)     {         int[,] arr = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };//declaration and initialization          //traversal         for(int i=0;i<3;i++){             for(int j=0;j<3;j++){                 Console.Write(arr[i,j]+” “);             }             Console.WriteLine();//new line at each row         }     } } 

Output:

1 2 3 4 5 6 7 8 9

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