ICollectionContains Method

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Determines whether the ICollection contains a specific value.

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

bool Contains(
	T item
bool Contains(
	T item
abstract Contains : 
        item:'T -> bool
Function Contains (
	item As T
) As Boolean


Type: T

The object to locate in the ICollection.

Return Value


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

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

Universal Windows Platform
Available since 8
.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
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