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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>.

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.

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