C#：USB设备枚举（一）DeviceIoControl的PInvoke

		

	 

	/* ----------------------------------------------------------

	文件名称：DeviceIoControl.cs

	 

	作者：秦建辉

	 

	MSN：splashcn@msn.com

	QQ：36748897

	 

	博客：http://blog.csdn.net/jhqin

	 

	开发环境：

	    Visual Studio V2010

	    .NET Framework 4 Client Profile

	 

	版本历史：

	    V1.0    2011年10月10日

	            实现对DeviceIoControl接口的PInvoke

	 

	参考资料：

	    http://www.pinvoke.net/

	------------------------------------------------------------ */ 

	using System; 

	using System.Runtime.InteropServices; 

	 

	namespace Splash.IO.PORTS 

	{ 

	    #region ENUM 

	    public enum USB_HUB_NODE : uint 

	    { 

	        UsbHub, 

	        UsbMIParent 

	    } 

	 

	    public enum USB_CONNECTION_STATUS 

	    { 

	        NoDeviceConnected, 

	        DeviceConnected, 

	        DeviceFailedEnumeration, 

	        DeviceGeneralFailure, 

	        DeviceCausedOvercurrent, 

	        DeviceNotEnoughPower, 

	        DeviceNotEnoughBandwidth, 

	        DeviceHubNestedTooDeeply, 

	        DeviceInLegacyHub 

	    } 

	 

	    public enum USB_DEVICE_SPEED : byte 

	    { 

	        UsbLowSpeed,    // 低速USB 1.1 

	        UsbFullSpeed,   // 全速USB 1.1 

	        UsbHighSpeed,   // 高速USB 2.0 

	        UsbSuperSpeed   // 极速USB 3.0 

	    } 

	    #endregion 

	 

	    public partial class USB 

	    { 

	        internal const Int32 IOCTL_GET_HCD_DRIVERKEY_NAME = 0x220424; 

	        internal const Int32 IOCTL_USB_GET_ROOT_HUB_NAME = 0x220408; 

	        internal const Int32 IOCTL_USB_GET_NODE_CONNECTION_NAME = 0x220414; 

	        internal const Int32 IOCTL_USB_GET_NODE_INFORMATION = 0x220408; 

	        internal const Int32 IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX = 0x220448; 

	        internal const Int32 IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION = 0x220410; 

	 

	        internal const Int32 MAXIMUM_USB_STRING_LENGTH = 255; 

	        internal const Int32 USB_STRING_DESCRIPTOR_TYPE = 3; 

	 

	        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] 

	        internal struct USB_HCD_DRIVERKEY_NAME 

	        { 

	            public Int32 ActualLength; 

	            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)] 

	            public String Name; 

	        } 

	 

	        #region USB_NODE_INFORMATION 

	        [StructLayout(LayoutKind.Sequential, Pack = 1)] 

	        internal struct USB_HUB_DESCRIPTOR 

	        { 

	            public Byte bDescriptorLength; 

	            public Byte bDescriptorType;    // 描述符类型：0x29 

	            public Byte bNumberOfPorts;     // 支持的下游端口数目 

	            public Int16 wHubCharacteristics;   // 特征描述 

	            public Byte bPowerOnToPowerGood;    // 从端口加电到端口正常工作的时间间隔(以2ms为单位) 

	            public Byte bHubControlCurrent;     // 设备所需最大电流 

	            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 64)] 

	            public Byte[] bRemoveAndPowerMask;  // 指示连接在集线器端口的设备是否可移走 

	        } 

	 

	        [StructLayout(LayoutKind.Sequential)] 

	        internal struct USB_HUB_INFORMATION 

	        { 

	            public USB_HUB_DESCRIPTOR HubDescriptor; 

	            public Byte HubIsBusPowered; 

	        } 

	 

	        [StructLayout(LayoutKind.Sequential)] 

	        internal struct USB_MI_PARENT_INFORMATION 

	        { 

	            public Int32 NumberOfInterfaces; 

	        }; 

	         

	        [StructLayout(LayoutKind.Explicit)] 

	        internal struct UsbNodeUnion 

	        { 

	            [FieldOffset(0)] 

	            public USB_HUB_INFORMATION HubInformation; 

	            [FieldOffset(0)] 

	            public USB_MI_PARENT_INFORMATION MiParentInformation; 

	  &nbs

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