/// <summary>
/// Retrieve device paths that can be opened from a specific device interface guid.
/// todo: Make this friendlier & query some more data about the devices being returned.
/// </summary>
/// <param name="deviceInterface">Guid uniquely identifying the interface to search for</param>
/// <returns>List of device paths that can be opened with CreateFile</returns>
public static EnumeratedDevice[] EnumerateDevicesByInterface(Guid deviceInterface)
{
// Horribe horrible things have to be done with SetupDI here. These travesties must never leave this class.
List <EnumeratedDevice> outputPaths = new List <EnumeratedDevice>();
IntPtr devInfo = SetupDiGetClassDevs(ref deviceInterface, null, IntPtr.Zero, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
if (devInfo == INVALID_HANDLE_VALUE)
{
throw new Exception("SetupDiGetClassDevs failed. " + (new Win32Exception()).ToString());
}
try
{
uint deviceIndex = 0;
SP_DEVICE_INTERFACE_DATA interfaceData = new SP_DEVICE_INTERFACE_DATA();
bool success = true;
for (deviceIndex = 0; ; deviceIndex++)
{
interfaceData.cbSize = (uint)Marshal.SizeOf(interfaceData);
success = SetupDiEnumDeviceInterfaces(devInfo, IntPtr.Zero, ref deviceInterface, deviceIndex, ref interfaceData);
if (!success)
{
if (Marshal.GetLastWin32Error() != ERROR_NO_MORE_ITEMS)
{
throw new Exception("SetupDiEnumDeviceInterfaces failed " + (new Win32Exception()).ToString());
}
// We have reached the end of the list of devices.
break;
}
// This is a valid interface, retrieve its path
EnumeratedDevice dev = new EnumeratedDevice()
{
DevicePath = RetrieveDeviceInstancePath(devInfo, interfaceData), InterfaceGuid = deviceInterface
};
// Todo: debug. Not working correctly.
/*
* dev.DeviceDescription = RetrieveDeviceInstancePropertyString(devInfo, interfaceData, DEVPROPKEY.Device_DeviceDesc);
* dev.Manufacturer = RetrieveDeviceInstancePropertyString(devInfo, interfaceData, DEVPROPKEY.Device_Manufacturer);
* dev.FriendlyName = RetrieveDeviceInstancePropertyString(devInfo, interfaceData, DEVPROPKEY.Device_FriendlyName);
*/
outputPaths.Add(dev);
}
}
finally
{
SetupDiDestroyDeviceInfoList(devInfo);
}
return(outputPaths.ToArray());
}
internal WinUSBEnumeratedDevice(EnumeratedDevice enumDev)
{
DevicePath = enumDev.DevicePath;
EnumeratedData = enumDev;
Match m = Regex.Match(DevicePath, @"vid_([\da-f]{4})");
if (m.Success) { VendorID = Convert.ToUInt16(m.Groups[1].Value, 16); }
m = Regex.Match(DevicePath, @"pid_([\da-f]{4})");
if (m.Success) { ProductID = Convert.ToUInt16(m.Groups[1].Value, 16); }
m = Regex.Match(DevicePath, @"mi_([\da-f]{2})");
if (m.Success) { UsbInterface = Convert.ToByte(m.Groups[1].Value, 16); }
}
internal WinUSBEnumeratedDevice(EnumeratedDevice enumDev)
{
DevicePath = enumDev.DevicePath;
EnumeratedData = enumDev;
Match m = Regex.Match(DevicePath, @"vid_([\da-f]{4})");
if (m.Success)
{
VendorID = Convert.ToUInt16(m.Groups[1].Value, 16);
}
m = Regex.Match(DevicePath, @"pid_([\da-f]{4})");
if (m.Success)
{
ProductID = Convert.ToUInt16(m.Groups[1].Value, 16);
}
m = Regex.Match(DevicePath, @"mi_([\da-f]{2})");
if (m.Success)
{
UsbInterface = Convert.ToByte(m.Groups[1].Value, 16);
}
}
/// <summary>
/// Retrieve device paths that can be opened from a specific device interface guid.
/// todo: Make this friendlier & query some more data about the devices being returned.
/// </summary>
/// <param name="deviceInterface">Guid uniquely identifying the interface to search for</param>
/// <returns>List of device paths that can be opened with CreateFile</returns>
public static EnumeratedDevice[] EnumerateDevicesByInterface(Guid deviceInterface)
{
// Horribe horrible things have to be done with SetupDI here. These travesties must never leave this class.
List<EnumeratedDevice> outputPaths = new List<EnumeratedDevice>();
IntPtr devInfo = SetupDiGetClassDevs(ref deviceInterface, null, IntPtr.Zero, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
if(devInfo == INVALID_HANDLE_VALUE)
{
throw new Exception("SetupDiGetClassDevs failed. " + (new Win32Exception()).ToString());
}
try
{
uint deviceIndex = 0;
SP_DEVICE_INTERFACE_DATA interfaceData = new SP_DEVICE_INTERFACE_DATA();
bool success = true;
for (deviceIndex = 0; ; deviceIndex++)
{
interfaceData.cbSize = (uint)Marshal.SizeOf(interfaceData);
success = SetupDiEnumDeviceInterfaces(devInfo, IntPtr.Zero, ref deviceInterface, deviceIndex, ref interfaceData);
if (!success)
{
if (Marshal.GetLastWin32Error() != ERROR_NO_MORE_ITEMS)
{
throw new Exception("SetupDiEnumDeviceInterfaces failed " + (new Win32Exception()).ToString());
}
// We have reached the end of the list of devices.
break;
}
// This is a valid interface, retrieve its path
EnumeratedDevice dev = new EnumeratedDevice() { DevicePath = RetrieveDeviceInstancePath(devInfo, interfaceData), InterfaceGuid = deviceInterface };
// Todo: debug. Not working correctly.
/*
dev.DeviceDescription = RetrieveDeviceInstancePropertyString(devInfo, interfaceData, DEVPROPKEY.Device_DeviceDesc);
dev.Manufacturer = RetrieveDeviceInstancePropertyString(devInfo, interfaceData, DEVPROPKEY.Device_Manufacturer);
dev.FriendlyName = RetrieveDeviceInstancePropertyString(devInfo, interfaceData, DEVPROPKEY.Device_FriendlyName);
*/
outputPaths.Add(dev);
}
}
finally
{
SetupDiDestroyDeviceInfoList(devInfo);
}
return outputPaths.ToArray();
}
