Atmo.UI.DevEx.MainForm.MainForm_FormClosing C# (CSharp) Method

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            if(null != AppContext) {
                var selectedNames = _historicSensorViewPanelController.Views
                    .Where(v => v.IsSelected && null != v.SensorInfo)
                    .Select(v => v.SensorInfo.Name)
                    .ToList();

                AppContext.PersistentState.SelectedDatabases = selectedNames;
                AppContext.PersistentState.IsDirty = true;
            }
        }