Array.GetLongLength Method

Gets a 64-bit integer that represents the number of elements in the specified dimension of the Array.

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

<ComVisibleAttribute(False)> _
Public Function GetLongLength ( _
	dimension As Integer _
) As Long
Dim instance As Array
Dim dimension As Integer
Dim returnValue As Long

returnValue = instance.GetLongLength(dimension)
/** @attribute ComVisibleAttribute(false) */ 
public long GetLongLength (
	int dimension
public function GetLongLength (
	dimension : int
) : long



A zero-based dimension of the Array whose length needs to be determined.

Return Value

A 64-bit integer that represents the number of elements in the specified dimension.

Exception typeCondition


dimension is less than zero.


dimension is equal to or greater than Rank.

An example of GetLongLength is GetLongLength(0), which returns the number of elements in the first dimension of the Array.

This method is an O(1) operation.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1

Community Additions