This snippet shows you how to get information about all CD / DVD drives on your machine using WMI and C#. To run the code you need to add reference to System.Management.

ManagementObjectSearcher mgmtObjects = 

  new ManagementObjectSearcher("Select * from Win32_CDROMDrive");

foreach (var item in mgmtObjects.Get())
{
  Console.WriteLine("Drive Letter - \t" + item["Drive"]);
  Console.WriteLine("Name - \t" + item["Name"]);
}

This code snippet will print out the letter and the name of all CD or DVD drives on a machine. Here is the output on my PC.