Dictionary<TKey, TValue>.ContainsValue Method

.NET Framework 4.6 and 4.5

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

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

Syntax

C++

JScript

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.

Remarks

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.

Version Information

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library