检测光盘是否在 DVD 驱动器中

Question

是否有一种简单的方法可以检测 DVD 驱动器中是否插入了光盘？我不在乎哪种光盘（CD、DVD 或蓝光）？

Answer 1

使用 WMI 检测 CD/DVD 驱动器中的磁盘：

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

来自here。

DriveType Enumeration可以帮助你什么盘：

• CDRom ：驱动器是光盘设备，例如 CD 或 DVD-ROM。
• Fixed ：驱动器是固定磁盘。
• Network ：驱动器是网络驱动器。
• NoRootDirectory 驱动器没有根目录。
• Ram ：驱动器是 RAM 磁盘。
• Removable ：驱动器是可移动存储设备，例如软盘驱动器或 USB 闪存驱动器。
• Unknown：驱动器类型未知。

---

CD/DVD/蓝光类型见IMAPI_MEDIA_PHYSICAL_TYPE enumeration:

• 未知
• 光盘
• CDR
• CDRW
• DVD 光盘
• DVD 内存
• DVDPLUSR
• DVDPLUSRW
• DVDPLUSR_DUALLAYER
• DVDDASHR
• DVDDASHRW
• DVDDASHR_DUALLAYER
• 磁盘
• DVDPLUSRW_DUALLAYER
• HDDVDROM
• HDDVDR
• HDDVDRAM
• BDROM
• BDR
• BDRE
• 最大

你的代码可能是这样的：

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;
}

来自here。

Answer 2

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

从上面的链接

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();
    }
}