IndexOf Method (CollectionBase<T>)

Returns the index of the specified item within this collection, or -1 if the item is not a member of this collection.

Syntax

Visual Basic

'Declaration
 
Public Function IndexOf( _
   ByVal item As T _
) As Integer

C#

public int IndexOf( 
   T item
)

Parameters

item

The item to locate.

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2