public bool IsConnected()
{
if (_device == null)
{
var devices = HidDevice.Enumerate()
.Select(de => new HidDevice(de));
var connected = devices
.Where(d => d.Attributes != null)
.FirstOrDefault(d => d.Attributes.VendorId == _vendorId && d.Attributes.ProductId == _productId);
if (connected != null)
_device = connected;
}
return _device != null;
}
private void monitor_Removed()
{
if (_device != null)
{
var devices = HidDevice.Enumerate()
.Select(de => new HidDevice(de));
var connected = devices
.Where(d => d.Attributes != null)
.FirstOrDefault(d => d.Attributes.VendorId == _vendorId && d.Attributes.ProductId == _productId);
if (connected == null)
{
_device.Dispose();
_device = null;
}
}
}