Returns the index in this collection of the specified object.
Parameters
- obj
- The object to find in this collection.
Return Value
The index in this collection of the specified object. If the object is not found in this collection, -1 will be returned.
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