如标题所述，我正在尝试确定驱动器是 DVD 驱动器还是 CD 驱动器。同样，我不是在询问媒体，而是在询问实际的驱动器本身...... DriveInfo 类指向的对象。
我认为 DriveInfo 类还不够，我将不得不从 WMI 获取 Win32_DiskDrive 实例并在那里挖掘。问题是到目前为止我发现的所有样本都在谈论检测到的媒体，但是 DVD 驱动器可以使用 CD 媒体，所以这还不够。另外，无论媒体是否存在，代码都应该工作。
问问题
1368 次
1 回答
1
您可以从 WMI 获得它。Win32_CDROMDrive 类。
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT MediaType FROM Win32_CDROMDrive");
ManagementObjectCollection collection = searcher.Get();
foreach (ManagementBaseObject obj in collection)
{
MessageBox.Show(obj["MediaType"].ToString());
}
这将是一个问题，如果您需要了解 BDRom 等。我建议使用 NeroCmd 工具而不是 WMI。
你也可以试试看这里。这是关于刻录的，但您可以在那里找到支持的驱动器媒体。如果它支持蓝光媒体，那么它显然不是 CD-ROM :)
我试图只得到重要的部分。在这里，我们使用 IMAPI2 API 来获取设备功能（CD/DVD/BD/HDDVD-READ）。我知道，有支持 BD 和 HDDVD 的 COMBO 驱动器，但我没有在代码中显示它。
//
// Determine the current recording devices
//
MsftDiscMaster2 discMaster = null;
try
{
discMaster = new MsftDiscMaster2();
if (!discMaster.IsSupportedEnvironment)
return;
// Get drives
foreach (string uniqueRecorderId in discMaster)
{
IDiscRecorder2 discRecorder2 = new MsftDiscRecorder2();
discRecorder2.InitializeDiscRecorder(uniqueRecorderId);
// Show device mount drive and determine type
Console.WriteLine("Path: {0} Type: {1}", discRecorder2.VolumePathNames[0], CheckType(discRecorder2));
}
}
catch (COMException ex)
{
Console.WriteLine("Error:{0} - Please install IMAPI2", ex.ErrorCode);
}
finally
{
if (discMaster != null)
Marshal.ReleaseComObject(discMaster);
}
魔法^_^
// Determine type
static string CheckType(IDiscRecorder2 disc)
{
var features = disc.SupportedFeaturePages.Select(a => (IMAPI_FEATURE_PAGE_TYPE)a).ToArray();
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_HD_DVD_READ))
return "HD-DVD-ROM";
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_BD_READ))
return "BD-ROM";
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_DVD_READ))
return "DVD-ROM";
if (features.Contains(IMAPI_FEATURE_PAGE_TYPE.IMAPI_FEATURE_PAGE_TYPE_CD_READ))
return "CD-ROM";
return "Unknown";
}
互操作...
/// <summary>
/// Microsoft IMAPIv2 Disc Master
/// </summary>
[ComImport]
[Guid("27354130-7F64-5B0F-8F00-5D77AFBE261E")]
[CoClass(typeof(MsftDiscMaster2Class))]
public interface MsftDiscMaster2 : IDiscMaster2 //, DiscMaster2_Event
{
}
[ComImport, ComSourceInterfaces("DDiscMaster2Events\0")]
[TypeLibType(TypeLibTypeFlags.FCanCreate)]
[Guid("2735412E-7F64-5B0F-8F00-5D77AFBE261E")]
[ClassInterface(ClassInterfaceType.None)]
public class MsftDiscMaster2Class
{
}
[ComImport]
[CoClass(typeof(MsftDiscRecorder2Class))]
[Guid("27354133-7F64-5B0F-8F00-5D77AFBE261E")]
public interface MsftDiscRecorder2 : IDiscRecorder2
{
}
[ComImport]
[Guid("2735412D-7F64-5B0F-8F00-5D77AFBE261E")]
[TypeLibType(TypeLibTypeFlags.FCanCreate)]
[ClassInterface(ClassInterfaceType.None)]
public class MsftDiscRecorder2Class
{
}
/// <summary>
/// IDiscMaster2 is used to get an enumerator for the set of CD/DVD (optical) devices on the system
/// </summary>
[ComImport]
[Guid("27354130-7F64-5B0F-8F00-5D77AFBE261E")]
[TypeLibType(TypeLibTypeFlags.FDual | TypeLibTypeFlags.FDispatchable | TypeLibTypeFlags.FNonExtensible)]
public interface IDiscMaster2
{
// Enumerates the list of CD/DVD devices on the system (VT_BSTR)
[DispId(-4), TypeLibFunc((short)0x41)]
IEnumerator GetEnumerator();
// Gets a single recorder's ID (ZERO BASED INDEX)
[DispId(0)]
string this[int index] { get; }
// The current number of recorders in the system.
[DispId(1)]
int Count { get; }
// Whether IMAPI is running in an environment with optical devices and permission to access them.
[DispId(2)]
bool IsSupportedEnvironment { get; }
}
/// <summary>
/// Represents a single CD/DVD type device, and enables many common operations via a simplified API.
/// </summary>
[ComImport]
[TypeLibType(TypeLibTypeFlags.FDual | TypeLibTypeFlags.FDispatchable | TypeLibTypeFlags.FNonExtensible)]
[Guid("27354133-7F64-5B0F-8F00-5D77AFBE261E")]
public interface IDiscRecorder2
{
// Ejects the media (if any) and opens the tray
[DispId(0x100)]
void EjectMedia();
// Close the media tray and load any media in the tray.
[DispId(0x101)]
void CloseTray();
// Acquires exclusive access to device. May be called multiple times.
[DispId(0x102)]
void AcquireExclusiveAccess(bool force, string clientName);
// Releases exclusive access to device. Call once per AcquireExclusiveAccess().
[DispId(0x103)]
void ReleaseExclusiveAccess();
// Disables Media Change Notification (MCN).
[DispId(260)]
void DisableMcn();
// Re-enables Media Change Notification after a call to DisableMcn()
[DispId(0x105)]
void EnableMcn();
// Initialize the recorder, opening a handle to the specified recorder.
[DispId(0x106)]
void InitializeDiscRecorder(string recorderUniqueId);
// The unique ID used to initialize the recorder.
[DispId(0)]
string ActiveDiscRecorder { get; }
// The vendor ID in the device's INQUIRY data.
[DispId(0x201)]
string VendorId { get; }
// The Product ID in the device's INQUIRY data.
[DispId(0x202)]
string ProductId { get; }
// The Product Revision in the device's INQUIRY data.
[DispId(0x203)]
string ProductRevision { get; }
// Get the unique volume name (this is not a drive letter).
[DispId(0x204)]
string VolumeName { get; }
// Drive letters and NTFS mount points to access the recorder.
[DispId(0x205)]
object[] VolumePathNames {[DispId(0x205)] get; }
// One of the volume names associated with the recorder.
[DispId(0x206)]
bool DeviceCanLoadMedia {[DispId(0x206)] get; }
// Gets the legacy 'device number' associated with the recorder. This number is not guaranteed to be static.
[DispId(0x207)]
int LegacyDeviceNumber {[DispId(0x207)] get; }
// Gets a list of all feature pages supported by the device
[DispId(520)]
object[] SupportedFeaturePages {[DispId(520)] get; }
// Gets a list of all feature pages with 'current' bit set to true
[DispId(0x209)]
object[] CurrentFeaturePages {[DispId(0x209)] get; }
// Gets a list of all profiles supported by the device
[DispId(0x20a)]
object[] SupportedProfiles {[DispId(0x20a)] get; }
// Gets a list of all profiles with 'currentP' bit set to true
[DispId(0x20b)]
object[] CurrentProfiles {[DispId(0x20b)] get; }
// Gets a list of all MODE PAGES supported by the device
[DispId(0x20c)]
object[] SupportedModePages {[DispId(0x20c)] get; }
// Queries the device to determine who, if anyone, has acquired exclusive access
[DispId(0x20d)]
string ExclusiveAccessOwner {[DispId(0x20d)] get; }
}
public enum IMAPI_FEATURE_PAGE_TYPE
{
IMAPI_FEATURE_PAGE_TYPE_PROFILE_LIST = 0,
IMAPI_FEATURE_PAGE_TYPE_CORE = 1,
IMAPI_FEATURE_PAGE_TYPE_MORPHING = 2,
IMAPI_FEATURE_PAGE_TYPE_REMOVABLE_MEDIUM = 3,
IMAPI_FEATURE_PAGE_TYPE_WRITE_PROTECT = 4,
IMAPI_FEATURE_PAGE_TYPE_RANDOMLY_READABLE = 0x10,
IMAPI_FEATURE_PAGE_TYPE_CD_MULTIREAD = 0x1d,
IMAPI_FEATURE_PAGE_TYPE_CD_READ = 0x1e,
IMAPI_FEATURE_PAGE_TYPE_DVD_READ = 0x1f,
IMAPI_FEATURE_PAGE_TYPE_RANDOMLY_WRITABLE = 0x20,
IMAPI_FEATURE_PAGE_TYPE_INCREMENTAL_STREAMING_WRITABLE = 0x21,
IMAPI_FEATURE_PAGE_TYPE_SECTOR_ERASABLE = 0x22,
IMAPI_FEATURE_PAGE_TYPE_FORMATTABLE = 0x23,
IMAPI_FEATURE_PAGE_TYPE_HARDWARE_DEFECT_MANAGEMENT = 0x24,
IMAPI_FEATURE_PAGE_TYPE_WRITE_ONCE = 0x25,
IMAPI_FEATURE_PAGE_TYPE_RESTRICTED_OVERWRITE = 0x26,
IMAPI_FEATURE_PAGE_TYPE_CDRW_CAV_WRITE = 0x27,
IMAPI_FEATURE_PAGE_TYPE_MRW = 0x28,
IMAPI_FEATURE_PAGE_TYPE_ENHANCED_DEFECT_REPORTING = 0x29,
IMAPI_FEATURE_PAGE_TYPE_DVD_PLUS_RW = 0x2a,
IMAPI_FEATURE_PAGE_TYPE_DVD_PLUS_R = 0x2b,
IMAPI_FEATURE_PAGE_TYPE_RIGID_RESTRICTED_OVERWRITE = 0x2c,
IMAPI_FEATURE_PAGE_TYPE_CD_TRACK_AT_ONCE = 0x2d,
IMAPI_FEATURE_PAGE_TYPE_CD_MASTERING = 0x2e,
IMAPI_FEATURE_PAGE_TYPE_DVD_DASH_WRITE = 0x2f,
IMAPI_FEATURE_PAGE_TYPE_DOUBLE_DENSITY_CD_READ = 0x30,
IMAPI_FEATURE_PAGE_TYPE_DOUBLE_DENSITY_CD_R_WRITE = 0x31,
IMAPI_FEATURE_PAGE_TYPE_DOUBLE_DENSITY_CD_RW_WRITE = 0x32,
IMAPI_FEATURE_PAGE_TYPE_LAYER_JUMP_RECORDING = 0x33,
IMAPI_FEATURE_PAGE_TYPE_CD_RW_MEDIA_WRITE_SUPPORT = 0x37,
IMAPI_FEATURE_PAGE_TYPE_BD_PSEUDO_OVERWRITE = 0x38,
IMAPI_FEATURE_PAGE_TYPE_DVD_PLUS_R_DUAL_LAYER = 0x3b,
IMAPI_FEATURE_PAGE_TYPE_BD_READ = 0x40,
IMAPI_FEATURE_PAGE_TYPE_BD_WRITE = 0x41,
IMAPI_FEATURE_PAGE_TYPE_HD_DVD_READ = 0x50,
IMAPI_FEATURE_PAGE_TYPE_HD_DVD_WRITE = 0x51,
IMAPI_FEATURE_PAGE_TYPE_POWER_MANAGEMENT = 0x100,
IMAPI_FEATURE_PAGE_TYPE_SMART = 0x101,
IMAPI_FEATURE_PAGE_TYPE_EMBEDDED_CHANGER = 0x102,
IMAPI_FEATURE_PAGE_TYPE_CD_ANALOG_PLAY = 0x103,
IMAPI_FEATURE_PAGE_TYPE_MICROCODE_UPDATE = 0x104,
IMAPI_FEATURE_PAGE_TYPE_TIMEOUT = 0x105,
IMAPI_FEATURE_PAGE_TYPE_DVD_CSS = 0x106,
IMAPI_FEATURE_PAGE_TYPE_REAL_TIME_STREAMING = 0x107,
IMAPI_FEATURE_PAGE_TYPE_LOGICAL_UNIT_SERIAL_NUMBER = 0x108,
IMAPI_FEATURE_PAGE_TYPE_MEDIA_SERIAL_NUMBER = 0x109,
IMAPI_FEATURE_PAGE_TYPE_DISC_CONTROL_BLOCKS = 0x10a,
IMAPI_FEATURE_PAGE_TYPE_DVD_CPRM = 0x10b,
IMAPI_FEATURE_PAGE_TYPE_FIRMWARE_INFORMATION = 0x10c,
IMAPI_FEATURE_PAGE_TYPE_AACS = 0x10d,
IMAPI_FEATURE_PAGE_TYPE_VCPS = 0x110
}
根据 MSDN，IMAPI_FEATURE_PAGE_TYPE 不仅可以包含这个值，所以要小心。
于 2015-09-27T06:36:23.513 回答