private void YearlyDetailReport_Load(object sender, EventArgs e)
        {
            SaleController controller = new SaleController();

            rpvYearlyDetail.LocalReport.DataSources.Clear();
            ReportDataSource rds = new ReportDataSource();

            rds.Name  = "SaleDataSet_SaleDataTable";
            rds.Value = controller.SelectYearlyDetail(this.year);
            rpvYearlyDetail.LocalReport.DataSources.Add(rds);

            ReportParameter[] param = new ReportParameter[1];

            param[0] = new ReportParameter("Year", this.year);
            this.rpvYearlyDetail.LocalReport.SetParameters(param);
            this.rpvYearlyDetail.ZoomMode = ZoomMode.Percent;
            this.rpvYearlyDetail.RefreshReport();
        }