private void Delete_Click(object sender, RoutedEventArgs e)
{
GUI.PointRN.DeleteNumber(point.PointType, db.GetRoutsBySession(sessionID), db.getPointBySession(sessionID), wayVal);
db.deletePoint(point.ID_Point);
DataChangedEventHandler handler = DataChanged;
if (handler != null)
{
handler(this, new EventArgs());
}
this.Close();
}