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Array.Rank Property

Definition

Gets the rank (number of dimensions) of the Array. For example, a one-dimensional array returns 1, a two-dimensional array returns 2, and so on.

C#
public int Rank { get; }

Property Value

The rank (number of dimensions) of the Array.

Examples

The following example initializes a one-dimensional array, a two-dimensional array, and a jagged array, and retrieves the Rank property of each.

C#
using System;

public class Example
{
   public static void Main()
   {
      int[] array1 = new int[10];
      int[,] array2= new int[10,3];
      int[][] array3 = new int[10][];

      Console.WriteLine("{0}: {1} dimension(s)",
                        array1.ToString(), array1.Rank);
      Console.WriteLine("{0}: {1} dimension(s)",
                        array2.ToString(), array2.Rank);
      Console.WriteLine("{0}: {1} dimension(s)",
                        array3.ToString(), array3.Rank);
   }
}
// The example displays the following output:
//       System.Int32[]: 1 dimension(s)
//       System.Int32[,]: 2 dimension(s)
//       System.Int32[][]: 1 dimension(s)

Remarks

For example, the following code creates an array of three dimensions with a Rank property whose value is 3.

C#
int[,,] TDArray = new int[1,1,1];

A jagged array (an array of arrays) is a one-dimensional array; the value of its Rank property is 1.

Retrieving the value of this property is an O(1) operation.

Applies to

Produit Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

See also