IndexOf(String) Method

Returns the index of the item in the collection that has the passed in key or -1 if key not found.

Syntax

Visual Basic

'Declaration
 
Public Overloads Overrides Function IndexOf( _
   ByVal key As String _
) As Integer

C#

public override int IndexOf( 
   string key
)

Parameters

key

A value that uniquely identifies an object in a collection.

Return Value

The index of the item in the collection that has the passed in key, or -1 if no item is found.

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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