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Dictionary<TKey, TValue>.ContainsValue Method

Determines whether the Dictionary<TKey, TValue> contains a specific value.

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

public bool ContainsValue(
	TValue value
)

Parameters

value
Type: TValue
The value to locate in the Dictionary<TKey, TValue>. The value can be null for reference types.

Return Value

Type: System.Boolean
true if the Dictionary<TKey, TValue> contains an element with the specified value; otherwise, false.

This method determines equality using the default equality comparer EqualityComparer<T>.Default for TValue, the type of values in the dictionary.

This method performs a linear search; therefore, the average execution time is proportional to Count. That is, this method is an O(n) operation, where n is Count.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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