private void saveEventButton_Click(object sender, EventArgs e)
 {
     DatabaseHandler db = new DatabaseHandler();
     Event ev = new Event();
     ev.Name = eventNameTB.Text;
     ev.Info = eventInfoRTB.Text;
     if (validateEvent(ev)) {
         db.saveEvent(ev);
         this.Close();
     } else {
         MessageBox.Show(errorMessage);
     }
 }