Eject and Close CD/DVD Devices IN C# [duplicate]

This question already has answers here: 开发者_开发技巧 Closed 11 years ago.

Possible Duplicate:

Programatically ejecting and retracting the CD drive in vb.net or c#

I want to Eject and Close Multiple DVD or CD Devices on a pc using c#. I also would like to detect which are IDE, SATA and SCSI

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To open or close CD

http://www.dreamincode.net/code/snippet1692.htm

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See IOCTL_CDROM_LOAD_MEDIA.