protected void OnButtonDeleteDistrictClicked(object sender, EventArgs e)
{
currentDistrict.Remove(uow);
var districtToDelete = bordersOverlay.Polygons.FirstOrDefault(p => (p.Tag as ScheduleRestrictedDistrict) == currentDistrict);
if (districtToDelete != null)
{
districtToDelete.IsVisible = false;
}
observableRestrictedDistricts.Remove(currentDistrict);
UpdateCurrentDistrict();
}
