private void button1_Click(object sender, EventArgs e)
 {
     MySalesTableAdapters.salesreturnTableAdapter adapter = new MySalesTableAdapters.salesreturnTableAdapter();
     MySales.salesreturnDataTable table = new MySales.salesreturnDataTable();
     
     adapter.FillByDateval(table, fromdate.Text, todate.Text);
     ReportDataSource MyNewDatSource = new ReportDataSource("DataSet1", (DataTable)table);
     this.reportViewer1.LocalReport.DataSources.Clear();
     this.reportViewer1.LocalReport.DataSources.Add(MyNewDatSource);
     this.reportViewer1.LocalReport.Refresh();
     this.reportViewer1.RefreshReport();
 }
        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked)
            {


                MySalesTableAdapters.salesreturnTableAdapter adapter = new MySalesTableAdapters.salesreturnTableAdapter();
                MySales.salesreturnDataTable table = new MySales.salesreturnDataTable();

                adapter.FillByDate(table);
                ReportDataSource MyNewDatSource = new ReportDataSource("DataSet1", (DataTable)table);
                this.reportViewer1.LocalReport.DataSources.Clear();
                this.reportViewer1.LocalReport.DataSources.Add(MyNewDatSource);
                this.reportViewer1.LocalReport.Refresh();
                this.reportViewer1.RefreshReport();
            }
           

        }