DriveInfo and DriveType question

DriveInfo info = new DriveInfo(drive);
        switch (info.DriveType)
        {
          case DriveType.CDRom:
            Console.WriteLine("CDROM drive");
            break;

Why does this code from a tutorial have "case DriveType.CdRom" instead of just "case CDRom"?

I thought that if info.DriveType is a property that returns a string, than it would return "CDRom". So why the leading DriveType in DriveType.CDRom?
LVL 9
BobHavertyComhAsked:
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KorbusCommented:
Anby is correct.  The value DriveType.CDROM, is technically called an ENUMERATION, (which usually equates to a particular number, behind the scenes), rather than a STRING.
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AndyAinscowFreelance programmer / ConsultantCommented:
>>I thought that if info.DriveType is a property that returns a string

Wrong.
http://msdn.microsoft.com/en-us/library/system.io.driveinfo.drivetype%28v=vs.110%29.aspx
info.DriveType returns a DriveType not a string, see:
http://msdn.microsoft.com/en-us/library/system.io.drivetype%28v=vs.110%29.aspx
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