private void ShowParamWindow()
        {
            if (_paramWindow != null)
                return;

            _paramWindow = new ParamWindow(Parameters);
            _paramWindow.ParamsChangedEvent += Okay;
            _paramWindow.Show();
        }
        private void Okay(ParamWindow sender, Params parameters)
        {
            Parameters = parameters;

            _paramWindow?.Close();
            _paramWindow = null;
            Resume();
        }