private void OnImportCommand()
 {
     UpdateWorkTime();
     CalendarDayStore.SetFileName(FileName);
     _isFilterNull = false;
     _isImporting  = true;
     OnLoadedCommand();
     _isFilterNull = true;
     _isImporting  = false;
 }
        private void OnExportCommand()
        {
            var filter = WeekCollection.Filter;

            WeekCollection.Filter = null;

            UpdateWorkTime();
            var exportCalendarDayCollection = new List <CalendarDay>();

            //TODO: Send to Action from WeekWrapper
            foreach (WeekWrapper week in WeekCollection)
            {
                exportCalendarDayCollection.AddRange(week.GetExportDays());
            }

            CalendarDayStore.SetFileName(FileName);
            CalendarDayStore.Save(exportCalendarDayCollection);

            WeekCollection.Filter = filter;
        }