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Dictionary.Count Property

Gets the number of key/value pairs contained in the Dictionary.

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

public int Count { get; }
/** @property */
public final int get_Count ()

public final function get Count () : int

Not applicable.

Property Value

The number of key/value pairs contained in the Dictionary.

The capacity of a Dictionary is the number of elements that the Dictionary can store. The Count property is the number of elements that are actually in the Dictionary.

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

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

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0

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