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StringCollection.System.Collections.IList.IndexOf Method

Searches for the specified Object and returns the zero-based index of the first occurrence within the entire StringCollection.

Namespace: System.Collections.Specialized
Assembly: System (in system.dll)

int IList.IndexOf (
	Object value
)
Not applicable.

Parameters

value

The Object to locate in the StringCollection. The value can be a null reference (Nothing in Visual Basic).

Return Value

The zero-based index of the first occurrence of value within the entire StringCollection, if found; otherwise, -1.

The StringCollection is searched forward starting at the first element and ending at the last element.

This method determines equality by calling Object.Equals.

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

Starting with the .NET Framework 2.0, this method uses the collection’s objects’ Equals and CompareTo methods on item to determine whether item exists. In the earlier versions of the .NET Framework, this determination was made by using the Equals and CompareTo methods of the item parameter on the objects in the collection.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, 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, 1.1, 1.0

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