ContainsValue Method

Dictionary<TKey, TValue>.ContainsValue Method (TValue)


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

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

public bool ContainsValue(
	TValue 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.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top
© 2015 Microsoft