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ReadOnlyCollection.System.Collections.IList.IndexOf Method

Determines the index of a specific item in the IList.

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

int IList.IndexOf (
	Object value
)
Not applicable.

Parameters

value

The Object to locate in the IList.

Return Value

The index of value if found in the list; otherwise, -1.

Exception typeCondition

ArgumentException

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

This method determines equality using the default comparer EqualityComparer.Default.

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

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

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