usb-C # 打開USB接口編程 返回值總是錯誤

C # 打開USB接口編程 返回值總是錯誤

下面是我在網上找到的搜索本機上的USB設備後再根據PNPDeceiveId打開USB設備，可是不知道為什麼在自己的電腦上找不到相應設備，句柄的返回值總是-1，麻煩大家幫忙看一下哪裡錯了,

public static IntPtr openDeceive(String PNPDeviceID)
{
//if (String.IsNullOrEmpty(PNPDeviceID)) return null;

        // 打開設備  
        IntPtr hHCDev = Kernel32.CreateFile(
            "\\\\.\\" + PNPDeviceID.Replace('\\', '#') + "#{3ABF6F2D-71C4-462A-8A92-1E6861E6AF27}",
            NativeFileAccess.GENERIC_WRITE,
            NativeFileShare.FILE_SHARE_WRITE,
            IntPtr.Zero,
            NativeFileMode.OPEN_EXISTING,
            IntPtr.Zero,
            IntPtr.Zero);
       // if (hHCDev == Kernel32.INVALID_HANDLE_VALUE) return null;
        return hHCDev;

    }

            Kernel32.CreateFile方法如下：

            [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern IntPtr CreateFile(
        String fileName,
        [MarshalAs(UnmanagedType.U4)] NativeFileAccess fileAccess,
        [MarshalAs(UnmanagedType.U4)] NativeFileShare fileShare,
        IntPtr securityAttributes,
        [MarshalAs(UnmanagedType.U4)] NativeFileMode creationDisposition,
        IntPtr flags,
        IntPtr template
        );

                    PNPDeceiveId獲得方法如下：
                     public static PnPEntityInfo[] AllUsbDevices
        {
            get
            {
                return WhoUsbDevice(UInt16.MinValue, UInt16.MinValue, Guid.Empty);
            }
        }

        /// <summary>
        /// 查詢USB設備實體（設備要求有VID和PID）
        /// </summary>
        /// <param name="VendorID">供應商標識，MinValue忽視</param>
        /// <param name="ProductID">產品編號，MinValue忽視</param>
        /// <param name="ClassGuid">設備安裝類Guid，Empty忽視</param>
        /// <returns>設備列表</returns>
        public static PnPEntityInfo[] WhoUsbDevice(UInt16 VendorID, UInt16 ProductID, Guid ClassGuid)
        {
            List<PnPEntityInfo> UsbDevices = new List<PnPEntityInfo>();

            // 獲取USB控制器及其相關聯的設備實體
            ManagementObjectCollection USBControllerDeviceCollection = new ManagementObjectSearcher("SELECT * FROM Win32_USBControllerDevice").Get();
            if (USBControllerDeviceCollection != null)
            {
                foreach (ManagementObject USBControllerDevice in USBControllerDeviceCollection)
                {   // 獲取設備實體的DeviceID
                    String Dependent = (USBControllerDevice["Dependent"] as String).Split(new Char[] { '=' })[1];

                    // 過濾掉沒有VID和PID的USB設備
                    Match match = Regex.Match(Dependent, "VID_[0-9|A-F]{4}&PID_[0-9|A-F]{4}");
                    if (match.Success)
                    {
                        UInt16 theVendorID = Convert.ToUInt16(match.Value.Substring(4, 4), 16);   // 供應商標識
                        if (VendorID != UInt16.MinValue && VendorID != theVendorID) continue;

                        UInt16 theProductID = Convert.ToUInt16(match.Value.Substring(13, 4), 16); // 產品編號
                        if (ProductID != UInt16.MinValue && ProductID != theProductID) continue;

                        ManagementObjectCollection PnPEntityCollection = new ManagementObjectSearcher("SELECT * FROM Win32_PnPEntity WHERE DeviceID=" + Dependent).Get();
                        if (PnPEntityCollection != null)
                        {
                            foreach (ManagementObject Entity in PnPEntityCollection)
                            {
                                Guid theClassGuid = new Guid(Entity["ClassGuid"] as String);    // 設備安裝類GUID
                                if (ClassGuid != Guid.Empty && ClassGuid != theClassGuid) continue;

                                PnPEntityInfo Element;
                                Element.PNPDeviceID = Entity["PNPDeviceID"] as String;  // 設備ID
                                Element.Name = Entity["Name"] as String;                // 設備名稱
                                Element.Description = Entity["Description"] as String;  // 設備描述
                                Element.Service = Entity["Service"] as String;          // 服務
                                Element.Status = Entity["Status"] as String;            // 設備狀態
                                Element.VendorID = theVendorID;     // 供應商標識
                                Element.ProductID = theProductID;   // 產品編號
                                Element.ClassGuid = theClassGuid;   // 設備安裝類GUID

                                UsbDevices.Add(Element);
                            }
                        }
                    }
                }
            }

            if (UsbDevices.Count == 0) return null; else return UsbDevices.ToArray();
        }
                    通過  AllUsbDevices得到USB設備列表，之後獲得其中一個設備的PNPDeceiveId,然後調用openDeceive方法，可是返回值總是-1，是一個無效值，麻煩大家幫忙找一下錯誤

最佳回答：

我曾經試驗過，.net不能訪問設備驅動程序，也就是說"\.\xxxx"的文件是打不開的。