Array.Rank Property


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.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

Public ReadOnly Property Rank As Integer

Property Value

Type: System.Int32

The rank (number of dimensions) of the Array.

For example, the Visual Basic code

Dim TDArray(0,0,0) As Integer

and the C# code

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

create an array of three dimensions with a Rank property whose value is 3.

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.

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

Module Example
   Public Sub Main()
      Dim array1(9) As Integer 
      Dim array2(9,2) As Integer  
      Dim array3(9)() As Integer 

      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)
   End Sub
End Module
' The example displays the following output:
'       System.Int32[]: 1 dimension
'       System.Int32[,]: 2 dimension
'       System.Int32[][]: 1 dimension

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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