C#枚举硬件设备

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/// <summary> /// 设备类型 /// </summary> class DeviceClasses { public static Guid ClassesGuid; public const int MAX_SIZE_DEVICE_DESCRIPTION = 1000; public const int CR_SUCCESS = 0x00000000; public const int CR_NO_SUCH_VALUE = 0x00000025; public const int CR_INVALID_DATA = 0x0000001F; private const int DIGCF_PRESENT = 0x00000002; private const int DIOCR_INSTALLER = 0x00000001; private const int MAXIMUM_ALLOWED = 0x02000000; public const int DMI_MASK = 0x00000001; public const int DMI_BKCOLOR = 0x00000002; public const int DMI_USERECT = 0x00000004; [StructLayout(LayoutKind.Sequential)] class SP_DEVINFO_DATA { public int cbSize; public Guid ClassGuid; public int DevInst; public ulong Reserved; } [DllImport("cfgmgr32.dll")] private static extern UInt32 CM_Enumerate_Classes(UInt32 ClassIndex, ref Guid ClassGuid, UInt32 Params); [DllImport("setupapi.dll")] private static extern Boolean SetupDiClassNameFromGuidA(ref Guid ClassGuid, StringBuilder ClassName, UInt32 ClassNameSize, ref UInt32 RequiredSize); [DllImport("setupapi.dll")] private static extern IntPtr SetupDiGetClassDevsA(ref Guid ClassGuid, UInt32 Enumerator, IntPtr hwndParent, UInt32 Flags); [DllImport("setupapi.dll")] private static extern Boolean SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet); [DllImport("setupapi.dll")] private static extern IntPtr SetupDiOpenClassRegKeyExA(ref Guid ClassGuid, UInt32 samDesired, int Flags, IntPtr MachineName, UInt32 Reserved); [DllImport("setupapi.dll")] private static extern Boolean SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, UInt32 MemberIndex, SP_DEVINFO_DATA DeviceInfoData); [DllImport("advapi32.dll")] private static extern UInt32 RegQueryValueA(IntPtr KeyClass, UInt32 SubKey, StringBuilder ClassDescription, ref UInt32 sizeB); /// <summary> /// 设备类型图标信息 /// </summary> [StructLayout(LayoutKind.Sequential)] public class SP_CLASSIMAGELIST_DATA { public int cbSize; public ImageList ImageList; public ulong Reserved; } public struct RECT { long left; long top; long right; long bottom; } /// <summary> /// 载入图片 /// </summary> /// <param name="hInstance"></param> /// <param name="Reserved"></param> /// <returns></returns> [DllImport("user32.dll")] public static extern int LoadBitmapW(int hInstance, ulong Reserved); /// <summary> /// 获取图标 /// </summary> /// <param name="ClassImageListData"></param> /// <returns></returns> [DllImport("setupapi.dll")] public static extern Boolean SetupDiGetClassImageList(out SP_CLASSIMAGELIST_DATA ClassImageListData); [DllImport("setupapi.dll")] public static extern int SetupDiDrawMiniIcon(Graphics hdc, RECT rc, int MiniIconIndex, int Flags); [DllImport("setupapi.dll")] public static extern bool SetupDiGetClassBitmapIndex(Guid ClassGuid, out int MiniIconIndex); [DllImport("setupapi.dll")] public static extern int SetupDiLoadClassIcon(ref Guid classGuid, out IntPtr hIcon, out int index); /// <summary> /// 枚举设备类型 /// </summary> /// <param name="ClassIndex"></param> /// <param name="ClassName"></param> /// <param name="ClassDescription"></param> /// <param name="DevicePresent"></param> /// <returns></returns> public static int EnumerateClasses(UInt32 ClassIndex, StringBuilder ClassName, StringBuilder ClassDescription, ref bool DevicePresent) { Guid ClassGuid = Guid.Empty; IntPtr NewDeviceInfoSet; UInt32 result; SP_DEVINFO_DATA DeviceInfoData = new SP_DEVINFO_DATA(); bool resNam = false; UInt32 RequiredSize = 0; result = CM_Enumerate_Classes(ClassIndex, ref ClassGuid, 0); DevicePresent = false; SP_CLASSIMAGELIST_DATA imagelist = new SP_CLASSIMAGELIST_DATA(); if (result != CR_SUCCESS) { return (int)result; } resNam = SetupDiClassNameFromGuidA(ref ClassGuid, ClassName, RequiredSize, ref RequiredSize); if (RequiredSize > 0) { ClassName.Capacity = (int)RequiredSize; resNam = SetupDiClassNameFromGuidA(ref ClassGuid, ClassName, RequiredSize, ref RequiredSize); } NewDeviceInfoSet = SetupDiGetClassDevsA(ref ClassGuid, 0, IntPtr.Zero, DIGCF_PRESENT); if (NewDeviceInfoSet.ToInt32() == -1) { DevicePresent = false; return 0; } UInt32 numD = 0; DeviceInfoData.cbSize = 28; DeviceInfoData.DevInst = 0; DeviceInfoData.ClassGuid = System.Guid.Empty; DeviceInfoData.Reserved = 0; Boolean res1 = SetupDiEnumDeviceInfo( NewDeviceInfoSet, numD, DeviceInfoData); if (!res1) { DevicePresent = false; return 0; } SetupDiDestroyDeviceInfoList(NewDeviceInfoSet); IntPtr KeyClass = SetupDiOpenClassRegKeyExA( ref ClassGuid, MAXIMUM_ALLOWED, DIOCR_INSTALLER, IntPtr.Zero, 0); if (KeyClass.ToInt32() == -1) { DevicePresent = false; return 0; } UInt32 sizeB = MAX_SIZE_DEVICE_DESCRIPTION; ClassDescription.Capacity = MAX_SIZE_DEVICE_DESCRIPTION; UInt32 res = RegQueryValueA(KeyClass, 0, ClassDescription, ref sizeB); if (res != 0) ClassDescription = new StringBuilder(""); //No device description DevicePresent = true; ClassesGuid = DeviceInfoData.ClassGuid; return 0; } }

class DeviceInfo { private const int DIGCF_PRESENT = (0x00000002); private const int MAX_DEV_LEN = 1000; private const int SPDRP_FRIENDLYNAME = (0x0000000C); private const int SPDRP_DEVICEDESC = (0x00000000); [StructLayout(LayoutKind.Sequential)] private class SP_DEVINFO_DATA { public int cbSize; public Guid ClassGuid; public int DevInst; public ulong Reserved; }; [DllImport("setupapi.dll")] private static extern Boolean SetupDiClassGuidsFromNameA(string ClassN, ref Guid guids, UInt32 ClassNameSize, ref UInt32 ReqSize); [DllImport("setupapi.dll")] private static extern IntPtr SetupDiGetClassDevsA(ref Guid ClassGuid, UInt32 Enumerator, IntPtr hwndParent, UInt32 Flags); [DllImport("setupapi.dll")] private static extern Boolean SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, UInt32 MemberIndex, SP_DEVINFO_DATA DeviceInfoData); [DllImport("setupapi.dll")] private static extern Boolean SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet); [DllImport("setupapi.dll")] private static extern Boolean SetupDiGetDeviceRegistryPropertyA(IntPtr DeviceInfoSet, SP_DEVINFO_DATA DeviceInfoData, UInt32 Property, UInt32 PropertyRegDataType, StringBuilder PropertyBuffer, UInt32 PropertyBufferSize, IntPtr RequiredSize); /// <summary> /// 通过设备类型枚举设备信息 /// </summary> /// <param name="DeviceIndex"></param> /// <param name="ClassName"></param> /// <param name="DeviceName"></param> /// <returns></returns> public static int EnumerateDevices(UInt32 DeviceIndex, string ClassName, StringBuilder DeviceName) { UInt32 RequiredSize = 0; Guid guid = Guid.Empty; Guid[] guids = new Guid[1]; IntPtr NewDeviceInfoSet; SP_DEVINFO_DATA DeviceInfoData = new SP_DEVINFO_DATA(); bool res = SetupDiClassGuidsFromNameA(ClassName, ref guids[0], RequiredSize, ref RequiredSize); if (RequiredSize == 0) { //类型不正确 DeviceName = new StringBuilder(""); return -2; } if (!res) { guids = new Guid[RequiredSize]; res = SetupDiClassGuidsFromNameA(ClassName, ref guids[0], RequiredSize, ref RequiredSize); if (!res || RequiredSize == 0) { //类型不正确 DeviceName = new StringBuilder(""); return -2; } } //通过类型获取设备信息 NewDeviceInfoSet = SetupDiGetClassDevsA(ref guids[0], 0, IntPtr.Zero, DIGCF_PRESENT); if (NewDeviceInfoSet.ToInt32() == -1) { //设备不可用 DeviceName = new StringBuilder(""); return -3; } DeviceInfoData.cbSize = 28; //正常状态 DeviceInfoData.DevInst = 0; DeviceInfoData.ClassGuid = System.Guid.Empty; DeviceInfoData.Reserved = 0; res = SetupDiEnumDeviceInfo(NewDeviceInfoSet, DeviceIndex, DeviceInfoData); if (!res) { //没有设备 SetupDiDestroyDeviceInfoList(NewDeviceInfoSet); DeviceName = new StringBuilder(""); return -1; } DeviceName.Capacity = MAX_DEV_LEN; if (!SetupDiGetDeviceRegistryPropertyA(NewDeviceInfoSet, DeviceInfoData, SPDRP_FRIENDLYNAME, 0, DeviceName, MAX_DEV_LEN, IntPtr.Zero)) { res = SetupDiGetDeviceRegistryPropertyA(NewDeviceInfoSet, DeviceInfoData, SPDRP_DEVICEDESC, 0, DeviceName, MAX_DEV_LEN, IntPtr.Zero); if (!res) { //类型不正确 SetupDiDestroyDeviceInfoList(NewDeviceInfoSet); DeviceName = new StringBuilder(""); return -4; } } return 0; } }

/// <summary> /// 设备资源（查询MSDN） /// </summary> public class DeviceResources { private const int DIGCF_PRESENT = (0x00000002); private const int MAX_DEV_LEN = 1000; private const int SPDRP_FRIENDLYNAME = (0x0000000C); // FriendlyName (R/W) private const int SPDRP_DEVICEDESC = (0x00000000); // DeviceDesc (R/W) public const int sizIO_HEADER = 28; public const int sizDMA_HEADER = 16; public const int sizIRQ_HEADER = 20; public const int sizMEM_HEADER = 32; public const int ResType_Mem = 0x00000001; //Physical address resource public const int ResType_IO = 0x00000002; //Physical I/O address resource public const int ResType_DMA = 0x00000003; //DMA channels resource public const int ResType_IRQ = 0x00000004; //IRQ resource public const int CR_SUCCESS = 0; public const int CR_NO_MORE_LOG_CONF = 0x0000000E; public const int CR_BUFFER_SMALL = 0x0000001A; public const int CR_NO_SUCH_VALUE = (0x00000025); public const int CR_INVALID_DATA = (0x0000001F); //-------------------------------------------------------------- // 内存资源 //-------------------------------------------------------------- public const int fMD_MemoryType = (0x1); //位掩码，无论是否是可写的存储器 public const int fMD_ROM = (0x0); // 内存范围为只读 public const int fMD_RAM = (0x1); // 内存范围可能会被写入 public const int fMD_32_24 = (0x2); // 掩码，内存是24位或32位 public const int fMD_24 = (0x0); // 内存范围是24位 public const int fMD_32 = (0x2); // 内存范围是32位 public const int fMD_Prefetchable = (0x4); // 掩码，内存是否能预取 public const int fMD_PrefetchDisallowed = (0x0); // 不支持 public const int fMD_PrefetchAllowed = (0x4); // 支持 public const int fMD_Readable = (0x8); // 掩码，是否可读内存 public const int fMD_ReadAllowed = (0x0); // 可以 public const int fMD_ReadDisallowed = (0x8); // 只写 public const int fMD_CombinedWrite = (0x10); // 掩码，支持后写 public const int fMD_CombinedWriteDisallowed = (0x0); // 不支持 combined-write caching public const int fMD_CombinedWriteAllowed = (0x10); // 支持 combined-write caching // // 内存范围结构 // [StructLayout(LayoutKind.Sequential)] public class MEM_RANGE { public UInt64 MR_Align; // 基址对齐 public UInt32 MR_nBytes; // 指定所需的字节数 public UInt64 MR_Min; // 指定范围内的最低地址 public UInt64 MR_Max; // 指定范围内的最高地址 public UInt32 MR_Flags; // 指定标志描述范围 public UInt32 MR_Reserved; }; // // 内存描述结构 // [StructLayout(LayoutKind.Sequential)] public class MEM_DES { public UInt32 MD_Count; // 数量 public UInt32 MD_Type; // 大小 public UInt64 MD_Alloc_Base; // 内存地址分配基址范围 public UInt64 MD_Alloc_End; // 内存地址分配终址范围 public UInt32 MD_Flags; // 指定标志描述范围 public UInt32 MD_Reserved; }; //-------------------------------------------------------------- // I/O端口资源 //-------------------------------------------------------------- public const int fIOD_PortType = (0x1); // 掩码，无论端口是IO或内存 public const int fIOD_Memory = (0x0); // 内存使用的端口 public const int fIOD_IO = (0x1); // IO使用的端口 // // I/O端口结构 // [StructLayout(LayoutKind.Sequential)] public class IO_RANGE { public UInt64 IOR_Align; public UInt32 IOR_nPorts; public UInt64 IOR_Min; public UInt64 IOR_Max; public UInt32 IOR_RangeFlags; public UInt64 IOR_Alias; }; [StructLayout(LayoutKind.Sequential)] public class IO_DES { public UInt32 IOD_Count; // 数量 public UInt32 IOD_Type; // 大小 public UInt64 IOD_Alloc_Base; // 端口分配基址 public UInt64 IOD_Alloc_End; // 端口分配终址 public UInt32 IOD_DesFlags; // }; public const int IOA_Local = 0xff; //-------------------------------------------------------------- // DMA 资源 //-------------------------------------------------------------- public const int mDD_Width = (0x3); // 位掩码 public const int fDD_BYTE = (0x0); // 8-bit public const int fDD_WORD = (0x1); // 16-bit public const int fDD_DWORD = (0x2); // 32-bit [StructLayout(LayoutKind.Sequential)] public class DMA_RANGE { public UInt32 DR_Min; public UInt32 DR_Max; public UInt32 DR_Flags; }; [StructLayout(LayoutKind.Sequential)] public class DMA_DES { public UInt32 DD_Count; // 数量 public UInt32 DD_Type; // 大小 public UInt32 DD_Flags; // 标志位 public UInt32 DD_Alloc_Chan; // 指定的DMA已经被分配 }; //-------------------------------------------------------------- // 中断资源 //-------------------------------------------------------------- // //定义为一个中断资源的范围属性标志。每个位标志识别恒定的位掩码。继位掩码的定义是可能的值。 // public const int mIRQD_Share = (0x1); // 位掩码，是否可以共享的IRQ public const int fIRQD_Exclusive = (0x0); // 可能不能共享的IRQ public const int fIRQD_Share = (0x1); // 能共享的IRQ public const int mIRQD_Edge_Level = (0x2); public const int fIRQD_Level = (0x0); public const int fIRQD_Edge = (0x2); // // 中断范围 // [StructLayout(LayoutKind.Sequential)] public class IRQ_RANGE { public UInt32 IRQR_Min; // 最小中断 public UInt32 IRQR_Max; // 最大 public UInt32 IRQR_Flags; }; // // 中断描述 // [StructLayout(LayoutKind.Sequential)] public class IRQ_DES { public UInt32 IRQD_Count; // 数量 public UInt32 IRQD_Type; // 类型 public UInt32 IRQD_Flags; // 标志位 public UInt32 IRQD_Alloc_Num; // 指定了被分配的IRQ public UInt32 IRQD_Affinity; }; [StructLayout(LayoutKind.Sequential)] private class SP_DEVINFO_DATA { public int cbSize; public Guid ClassGuid; public int DevInst; // 句柄 public ulong Reserved; }; [DllImport("setupapi.dll")] private static extern Boolean SetupDiClassGuidsFromNameA(string ClassN, ref Guid guids, UInt32 ClassNameSize, ref UInt32 ReqSize); [DllImport("setupapi.dll")] private static extern IntPtr SetupDiGetClassDevsA(ref Guid ClassGuid, UInt32 Enumerator, IntPtr hwndParent, UInt32 Flags); [DllImport("setupapi.dll")] private static extern Boolean SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, UInt32 MemberIndex, SP_DEVINFO_DATA DeviceInfoData); [DllImport("setupapi.dll")] private static extern Boolean SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet); [DllImport("cfgmgr32.dll")] private static extern UInt32 CM_Get_First_Log_Conf(ref UInt32 Conf, UInt32 DevInst, UInt32 Flag); [DllImport("cfgmgr32.dll")] private static extern UInt32 CM_Get_Next_Res_Des(ref UInt32 ResHandle, UInt32 CurrConf, UInt32 TypResource, UInt32 ptr, UInt32 Flag); [DllImport("cfgmgr32.dll")] private static extern UInt32 CM_Free_Res_Des_Handle(UInt32 handle); [DllImport("cfgmgr32.dll")] private static extern UInt32 CM_Get_Res_Des_Data_Size(ref UInt32 handle, UInt32 ResHandle, UInt32 Flag); [DllImport("cfgmgr32.dll")] private static extern UInt32 CM_Get_Res_Des_Data(UInt32 ResHandle, IntPtr buf, UInt32 size, UInt32 Flag); static bool FResourceOpen = false; public static IntPtr FBufForRes; static UInt32 FResourceType; static UInt32 CurrConf; static IntPtr FResDeviceInfoSet; //设备信息 static UInt32 ResHandle; static UInt32 PrevResHandle; static bool FNoResourses; static UInt32 sizeResFu;

public DeviceResources() { } //打开资源 public static bool OpenResources(UInt32 TypR, string ClassName, int DeviceIndex) { if (FResourceOpen) return false; FBufForRes = IntPtr.Zero; //测试资源类型 if ((TypR != ResType_Mem) && (TypR != ResType_IO) && (TypR != ResType_DMA) && (TypR != ResType_IRQ)) { //类型不正确则返回 FResourceType = TypR; FResourceOpen = true; CurrConf = 0; FResDeviceInfoSet = IntPtr.Zero; ResHandle = 0; PrevResHandle = 0; FNoResourses = true; return false; } Guid[] guids = new Guid[1]; UInt32 RequiredSize = 0; SP_DEVINFO_DATA FDeviceInfoData = new SP_DEVINFO_DATA(); //通过类型名称返回设备信息 bool res = SetupDiClassGuidsFromNameA(ClassName, ref guids[0], RequiredSize, ref RequiredSize); if (RequiredSize == 0) { //类型不正确 return false; } //通过类型名称返回设备信息 if (!res) { guids = new Guid[RequiredSize]; res = SetupDiClassGuidsFromNameA(ClassName, ref guids[0], RequiredSize, ref RequiredSize); if (!res || RequiredSize == 0) { //类型不正确 return false; } } //通过类型名称返回设备信息 FResDeviceInfoSet = SetupDiGetClassDevsA(ref guids[0], 0, IntPtr.Zero, DIGCF_PRESENT); if (FResDeviceInfoSet.ToInt32() == -1) { //设备不可用 FResourceType = TypR; FResourceOpen = true; CurrConf = 0; FResDeviceInfoSet = IntPtr.Zero; ResHandle = 0; PrevResHandle = 0; FNoResourses = true; guids = null; return false; } FDeviceInfoData.cbSize = 28; //正常 FDeviceInfoData.DevInst = 0; FDeviceInfoData.ClassGuid = System.Guid.Empty; FDeviceInfoData.Reserved = 0; res = SetupDiEnumDeviceInfo(FResDeviceInfoSet, (UInt32)DeviceIndex, FDeviceInfoData); if (!res) { //没有该类型的设备 SetupDiDestroyDeviceInfoList(FResDeviceInfoSet); FResourceType = TypR; FResourceOpen = true; CurrConf = 0; FResDeviceInfoSet = IntPtr.Zero; ResHandle = 0; PrevResHandle = 0; FNoResourses = true; guids = null; return false; } CurrConf = 0; ResHandle = 0; //打开配置 UInt32 cmRes = CM_Get_First_Log_Conf(ref CurrConf, (UInt32)FDeviceInfoData.DevInst, 0x00000002); if (cmRes == CR_NO_MORE_LOG_CONF) { cmRes = CM_Get_First_Log_Conf(ref CurrConf, (UInt32)FDeviceInfoData.DevInst, 0x00000003); } if (cmRes != CR_SUCCESS) { //错误 SetupDiDestroyDeviceInfoList(FResDeviceInfoSet); FResourceType = TypR; FResourceOpen = true; CurrConf = 0; FResDeviceInfoSet = IntPtr.Zero; ResHandle = 0; PrevResHandle = 0; FNoResourses = true; guids = null; return false; } //获取设备资源描述 cmRes = CM_Get_Next_Res_Des(ref ResHandle, CurrConf, TypR, 0, 0); if (cmRes == CR_SUCCESS) { //OK FResourceType = TypR; FResourceOpen = true; PrevResHandle = 0; FNoResourses = false; guids = null; return true; } else { //error SetupDiDestroyDeviceInfoList(FResDeviceInfoSet); FResourceType = TypR; FResourceOpen = true; CurrConf = 0; FResDeviceInfoSet = IntPtr.Zero; ResHandle = 0; PrevResHandle = 0; FNoResourses = true; guids = null; return false; } } //关闭资源 public static bool CloseResources() { // if (FBufForRes != IntPtr.Zero) Marshal.FreeHGlobal(FBufForRes); if (!FResourceOpen) return false; FResourceOpen = false; FResourceType = 0; if (ResHandle != 0) { CM_Free_Res_Des_Handle(ResHandle); ResHandle = 0; } return true; } //提取资源 public static int ExtractResourceInfo(ref bool NextResExist) { UInt32 sizeRes = 0; FBufForRes = IntPtr.Zero; if (FNoResourses) { NextResExist = false; return -1; } if (ResHandle == 0) { NextResExist = false; return -2; } //获取资源的大小 UInt32 cmRes = CM_Get_Res_Des_Data_Size(ref sizeRes, ResHandle, 0); if (cmRes != CR_SUCCESS) { NextResExist = false; return -3; } sizeResFu = sizeRes; //分配资源数据到缓冲区 FBufForRes = Marshal.AllocHGlobal(1000); //必须要有足够的缓冲区大小 //获取资源数据 cmRes = CM_Get_Res_Des_Data(ResHandle, FBufForRes, sizeResFu, 0); if (cmRes == CR_BUFFER_SMALL) return -4; if (cmRes != CR_SUCCESS) { NextResExist = false; return -5; } PrevResHandle = 0; //获得下一个资源描述（如果存在） cmRes = CM_Get_Next_Res_Des(ref PrevResHandle, ResHandle, FResourceType, 0, 0); if (cmRes == CR_SUCCESS) { NextResExist = true; CM_Free_Res_Des_Handle(ResHandle); ResHandle = PrevResHandle; PrevResHandle = 0; } else { NextResExist = false; CM_Free_Res_Des_Handle(ResHandle); ResHandle = 0; PrevResHandle = 0; } return (int)sizeResFu; //返回资源数据的大小 } }

#region 加载设备类型 al = new ArrayList(); bool DevExist = false; UInt32 i = 0; treeView1.Nodes.Clear(); treeView1.Nodes.Add(SystemInformation.ComputerName); while (true) { StringBuilder classes = new StringBuilder(""); StringBuilder classDescriptions = new StringBuilder(""); int res = DeviceClasses.EnumerateClasses(i, classes, classDescriptions, ref DevExist); if (res == DeviceClasses.CR_NO_SUCH_VALUE) break; ++i; if ((res != DeviceClasses.CR_NO_SUCH_VALUE && res != DeviceClasses.CR_SUCCESS) || !DevExist) continue; #region 获取图标 IntPtr hIcon; int ix; Guid guid = DeviceClasses.ClassesGuid; if (DeviceClasses.SetupDiLoadClassIcon(ref guid, out hIcon, out ix) != 0) { Icon devIcon = Icon.FromHandle(hIcon); imgListTreeSmall.Images.Add(devIcon); imgListTreeBig.Images.Add(devIcon); } int iImageIndex = imgListTreeSmall.Images.Count - 1; #endregion TreeNode tn = new TreeNode(classDescriptions.ToString(), iImageIndex, iImageIndex); treeView1.Nodes[0].Nodes.Add(tn); #region 加载设备 StringBuilder devices = new StringBuilder(""); int result = 0; UInt32 Index = 0; while (true) { result = DeviceInfo.EnumerateDevices(Index, classes.ToString(), devices); Index++; if (result == -2) { break; } if (result == -1) break; if (result == 0) { TreeNode tnClient = new TreeNode(devices.ToString(), iImageIndex, iImageIndex); tn.Nodes.Add(tnClient); } } #endregion } #endregion

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