Dictionary<TKey, TValue>::ValueCollection::ICollection<TValue>::Contains Method (TValue)

 

Determines whether the ICollection<T> contains a specific value.

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

private:
virtual bool Contains(
	TValue item
) sealed = ICollection<TValue>::Contains

Parameters

item
Type: TValue

The object to locate in the ICollection<T>.

Return Value

Type: System::Boolean

true if item is found in the ICollection<T>; otherwise, false.

Implementations can vary in how they determine equality of objects; for example, List<T> uses Default, whereas, Dictionary<TKey, TValue> allows the user to specify the IComparer<T> implementation to use for comparing keys.

This method is an O(n) operation, where n is Count.

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
Return to top
Show: