Enumerable.Contains<'TSource> Method (IEnumerable<'TSource>, 'TSource)

 

Determines whether a sequence contains a specified element by using the default equality comparer.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

static member Contains<'TSource> : 
        source:IEnumerable<'TSource> *
        value:'TSource -> bool

Parameters

source
Type: System.Collections.Generic.IEnumerable<'TSource>

A sequence in which to locate a value.

value
Type: TSource

The value to locate in the sequence.

Return Value

Type: System.Boolean

true if the source sequence contains an element that has the specified value; otherwise, false.

Type Parameters

TSource

The type of the elements of source.

Exception Condition
ArgumentNullException

source is null.

If the type of source implements ICollection<'T>, the Contains method in that implementation is invoked to obtain the result. Otherwise, this method determines whether source contains the specified element.

Enumeration is terminated as soon as a matching element is found.

Elements are compared to the specified value by using the default equality comparer, Default.

The following code example demonstrates how to use Contains<'TSource>(IEnumerable<'TSource>, 'TSource) to determine whether an array contains a specific element.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
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
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