Enumerable.Contains<'TSource> Method (IEnumerable<'TSource>, 'TSource)
Determines whether a sequence contains a specified element by using the default equality comparer.
Assembly: System.Core (in System.Core.dll)
static member Contains<'TSource> : source:IEnumerable<'TSource> * value:'TSource -> bool
A sequence in which to locate a value.
The value to locate in the sequence.
Return ValueType: System.Boolean
true if the source sequence contains an element that has the specified value; otherwise, false.
The type of the elements of source.
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.
Available since 4.5
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Available since 8.1