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< T > .IList .Contains Method
Determines whether the
contains a specific value. IList
Exception Condition 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
instance is cast to an ReadOnlyCollection <T > interface. IList .NET Framework
Supported in: 4.5, 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
.NET for Windows Store apps
Supported in: Windows 8
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.