public void Open()
{
try
{
_deviceHandle = NativeInterface.CreateFile_SafeFileHandle(_devicePath,
(NativeInterface.GENERIC_WRITE | NativeInterface.GENERIC_READ),
NativeInterface.FILE_SHARE_READ | NativeInterface.FILE_SHARE_WRITE,
IntPtr.Zero,
NativeInterface.OPEN_EXISTING,
NativeInterface.FILE_ATTRIBUTE_NORMAL | NativeInterface.FILE_FLAG_OVERLAPPED,
0);
if (_deviceHandle.IsInvalid)
{
throw new Win32Exception("Failed to open WinUSB device handle.");
}
_InitializeDevice();
}
catch (Exception)
{
if (_deviceHandle != null)
{
_deviceHandle.Dispose();
_deviceHandle = null;
}
_FreeWinUSB();
throw;
}
}