檢測光盤是否在DVD驅動器中

Question

是否有一種簡單的方法可以檢測光盤是否插入DVD驅動器中？我不在乎什麼樣的光盤（CD，DVD或藍光）？

Answer 1

使用WMI來檢測是否磁盤在CD/DVD驅動器：

foreach (var drive in DriveInfo.GetDrives() 
           .Where(d => d.DriveType == DriveType.CDRom)) 
MessageBox.Show(drive.Name + " " + drive.IsReady.ToString()); 

從here。

DriveType Enumeration可以幫你什麼樣的光盤：

• CDRom：驅動器的光盤設備，如CD或DVD-ROM。
• Fixed：驅動器是一個固定磁盤。
• Network：驅動器是網絡驅動器。
• NoRootDirectory驅動器沒有根目錄。
• Ram：驅動器是RAM磁盤。
• Removable：驅動器是可移動存儲設備，例如軟盤驅動器或USB閃存驅動器。
• Unknown：驅動器的類型未知。

---

的一種CD/DVD的/藍光看到IMAPI_MEDIA_PHYSICAL_TYPE enumeration：

• UNKNOWN
• CDROM
• CDR
• CDRW
• DVDROM
• DVDRAM
• DVDPLUSR
• DVDPLUSRW
• DVDPLUSR_DUALLAYER
• DVDDASHR
• DVDDASHRW
• DVDDASHR_DUALLAYER
• DISK
• DVDPLUSRW_DUALLAYER
• HDDVDROM
• HDDVDR
• HDDVDRAM
• BD-ROM
• BDR
• BD-RE
• MAX

你的代碼可能是這樣的：

public bool IsDiscAvailable(int driveNumber) 
{ 
    MsftDiscMaster2Class discMaster = new MsftDiscMaster2Class(); 
    string id = discMaster[driveNumber]; 

    MsftDiscRecorder2Class recorder = new MsftDiscRecorder2Class(); 
    recorder.InitializeDiscRecorder(id); 

    MsftDiscFormat2DataClass dataWriter = new MsftDiscFormat2DataClass(); 
    if (dataWriter.IsRecorderSupported(recorder)) 
    { 
     dataWriter.Recorder = recorder; 
    } 
    else 
    { 
     Console.WriteLine("Recorder not supported"); 
     return false; 
    } 
    if (dataWriter.IsCurrentMediaSupported(recorder)) 
    { 
     var media = dataWriter.CurrentPhysicalMediaType; 
     if (media == IMAPI_MEDIA_PHYSICAL_TYPE.IMAPI_MEDIA_TYPE_UNKNOWN) 
     { 
      Console.WriteLine("Unknown media or no disc"); 
     } 
     else 
     { 
      Console.WriteLine("Found disc type {0}", media); 
      return true; 
     } 
    } 
    else 
    { 
     Console.WriteLine("Disc absent or invalid."); 
    } 
    return false; 
} 

從 here

。

Answer 2

How to Detect CD-ROM is loaded in the CD-ROM drive

從上面的鏈接

using System; 
using System.Management; 

class Application 
{ 
    public static void Main() 
    { 
     SelectQuery query = 
      new SelectQuery("select * from win32_logicaldisk where drivetype=5"); 
     ManagementObjectSearcher searcher = 
      new ManagementObjectSearcher(query); 

     foreach(ManagementObject mo in searcher.Get()) 
     { 
      // If both properties are null I suppose there's no CD 
      if((mo["volumename"] != null) || (mo["volumeserialnumber"] != null)) 
      { 
       Console.WriteLine("CD is named: {0}", mo["volumename"]); 
       Console.WriteLine("CD Serial Number: {0}", mo["volumeserialnumber"]); 
      } 
      else 
      { 
       Console.WriteLine("No CD in Unit"); 
      } 
     } 

     // Here to stop app from closing 
     Console.WriteLine("\nPress Return to exit."); 
     Console.Read(); 
    } 
}