Dictionary<TKey, TValue>.Count Property

Gets the number of key/value pairs contained in the Dictionary<TKey, TValue>.

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

public int Count { get; }

Property Value

Type: System.Int32
The number of key/value pairs contained in the Dictionary<TKey, TValue>.

Implements

ICollection<T>.Count
ICollection.Count

The capacity of a Dictionary<TKey, TValue> is the number of elements that the Dictionary<TKey, TValue> can store. The Count property is the number of elements that are actually in the Dictionary<TKey, TValue>.

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.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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