C# Multidimensional Arrays
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.
int[,] arr = new int[3,3]= { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
We can omit the array size.
int[,] arr = new int[,]{ { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
We can omit the new operator also.
int[,] arr = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
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
