private void DeviceRemoved(object sender, DeviceChangeEventArgs e)
{
if ((e.Type == INTV.Core.Model.Device.ConnectionType.Serial) && DeviceChange.IsDeviceChangeFromSystem(e.State))
{
var removedDevice = SerialPorts.FirstOrDefault(p => p.PortName == e.Name);
if ((removedDevice != null) && SerialPorts.Remove(removedDevice))
{
INTV.Shared.ComponentModel.CommandManager.InvalidateRequerySuggested();
}
}
RaisePropertyChanged("IsPortValid");
}