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ReadOnlyCollection(T).IList.Contains Method

Determines whether the IList contains a specific value.

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

private abstract Contains : 
        value:Object -> bool 
private override Contains : 
        value:Object -> bool 

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)

ExceptionCondition
ArgumentException

value is not of the type specified for the generic type parameter T.

This method determines equality using the default comparer EqualityComparer(T).Default.

This method performs a linear search; therefore, this method is an O(n) operation, where n is Count.

This member is an explicit interface member implementation. It can be used only when the ReadOnlyCollection(T) instance is cast to an IList interface.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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