Parameters
- The e-mail address to search for.
Return Value
The user name associated with the specified e-mail address. If no match is found, return a null reference (Nothing in Visual Basic).
Target Platforms: 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