This documentation is archived and is not being maintained.

List(T).Count Property

Gets the number of elements actually contained in the List(T).

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

public final function get Count () : int

Property Value

Type: System.Int32
The number of elements actually contained in the List(T).



Capacity is the number of elements that the List(T) can store before resizing is required. Count is the number of elements that are actually in the List(T).

Capacity is always greater than or equal to Count. If Count exceeds Capacity while adding elements, the capacity is increased by automatically reallocating the internal array before copying the old elements and adding the new elements.

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

The following code example shows the value of the Count property at various points in the life of a list. After the list has been created and populated and its elements displayed, the Capacity and Count properties are displayed. These properties are displayed again after the TrimExcess method has been called, and again after the contents of the list are cleared.

No code example is currently available or this language may not be supported.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0