//Insert an item in the database
        public int SaveChartDataModelAsync(ChartDataModel chartDataModel)
        {
            if (chartDataModel == null)
            {
                throw new Exception("Null");
            }

            return(_database.Insert(chartDataModel));
        }
 //Delete an item in the database
 public int DeleteChartDataModelAsync(ChartDataModel chartDataModel)
 {
     return(_database.Delete(chartDataModel));
 }