ICollection<'T>.Contains Method ('T)


Determines whether the ICollection<'T> contains a specific value.

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

abstract Contains : 
        item:'T -> bool


Type: T

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 Comparer<'T>.Default, whereas Dictionary<'TKey, 'TValue> allows the user to specify the IComparer<'T> 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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