Collection(Of T).IList.Contains Method (Object)

.NET Framework (current version)

Determines whether the IList contains a specific value.

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

Syntax

Private Function Contains (
	value As Object
) As Boolean
	Implements IList.Contains

Parameters

value: Type: System.Object
The Object to locate in the IList.

Return Value

Type: System.Boolean

true if the Object is found in the IList; otherwise, false.

Implements

IList.Contains(Object)

Exceptions

Exception	Condition
ArgumentException	value is of a type that is not assignable to the IList.

Remarks

This method determines equality by first determining whether value is of type T (or null) and then calling Contains.

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