/// <summary>
        /// Add to Chart Command Method
        /// </summary>
        /// <param name="param"></param>
        private void AddCommandMethod(object param)
        {
            GadgetWithPeriodColumns entry = new GadgetWithPeriodColumns();

            if (SelectedSeriesCB != null)
            {
                entry.GridId     = null;
                entry.GadgetName = null;
                entry.GadgetDesc = SelectedSeriesCB;
                entry.Amount     = null;
                entry.PeriodYear = null;
                ComparisonSeries.Add(entry);
            }
            List <COASpecificData> addItem = new List <COASpecificData>();

            if (selectedCOASpecificGadgetNameInfo == null)
            {
                addItem = (COASpecificInfo.Where(t => t.GroupDescription == defaultGadgetDesc && t.Description == SelectedSeriesCB &&
                                                 t.PeriodYear != 2300)).ToList();
            }
            else
            {
                addItem = (COASpecificInfo.Where(t => t.GroupDescription == selectedCOASpecificGadgetNameInfo && t.Description ==
                                                 SelectedSeriesCB && t.PeriodYear != 2300)).ToList();
            }
            if (addItem != null)
            {
                foreach (COASpecificData r in addItem)
                {
                    COASpecificFilteredInfo.Add(r);
                }
            }
            AddToComboBoxSeries.Remove(SelectedSeriesCB);
        }
        /// <summary>
        /// Delete Series from Chart
        /// </summary>
        /// <param name="param"></param>
        private void DeleteCommandMethod(object param)
        {
            GadgetWithPeriodColumns a          = param as GadgetWithPeriodColumns;
            List <COASpecificData>  removeItem = new List <COASpecificData>();

            removeItem = COASpecificFilteredInfo.Where(w => w.Description == a.GadgetDesc).ToList();
            if (removeItem != null)
            {
                foreach (COASpecificData r in removeItem)
                {
                    COASpecificFilteredInfo.Remove(r);
                }
            }
            ComparisonSeries.Remove(a);
            AddToComboBoxSeries.Add(a.GadgetDesc);
        }