public SampleViewModel(IDispatcherService dispatcherService, IGridPersistenceService persistenceService)
{
this.dispatcherService = dispatcherService;
this.gridPersistenceService = persistenceService;
SaveLayoutCommand = new TaskCommand <XamDataGrid>(OnSaveCommandExecute);
LoadLayoutCommand = new TaskCommand <XamDataGrid>(OnLoadCommandExecute);
dispatcherTimer.Interval = TimeSpan.FromMilliseconds(dispatcherInterval);
dispatcherTimer.Tick += DispatcherTimer_Tick1;
timer = new Timer(1000);
timer.Elapsed += Timer_Elapsed;
timer.Start();
DataItems = new FastObservableCollection <DealSpotVisual>();
lock (mappingDummyItemsLock)
{
mappingDummyItems = DataItems.ToDictionary(x => x.Id, x => x);
}
}