Thing is that I am changing DateRange times from several places, not only by dragging slider. But I also want to drag it and fire my event behind that also. I have a time change panel, where I control endTime and startTiime of DateRange component and also dragging a slider possibility. This DateRange component controls my ClassicChart datasets by refreshing queries. And now those queries run double. Are you having plans to add Event Handler to DateRange slider itself as well?