public void AddSummary_of_Sales_by_YearRow(Summary_of_Sales_by_YearRow row) {
     this.Rows.Add(row);
 }
 public void RemoveSummary_of_Sales_by_YearRow(Summary_of_Sales_by_YearRow row) {
     this.Rows.Remove(row);
 }
 public Summary_of_Sales_by_YearRowChangeEvent(Summary_of_Sales_by_YearRow row, System.Data.DataRowAction action) {
     this.eventRow = row;
     this.eventAction = action;
 }