private void SetIncidentsToolTip()
        {
            if (_setIncidentsToolTip)
            {
                int numIncidents = 0;
                if (TrainingArea != null && IncidentTypes.Count > 0)
                {
                    numIncidents = Incident.Count(trainingStart.Value, trainingEnd.Value, TrainingArea, IncidentTypes.ToArray());
                }

                toolTip.SetToolTip(incidentTypes, numIncidents + " total incidents selected");
            }
        }