private void button1_Click(object sender, EventArgs e)
        {
            this.reportQuary = dateTimePicker1.Text + "  to  " + dateTimePicker2.Text;
            string query = "";

            query = "Select * From TbDailyExpense Where ExpenseDate BETWEEN  '" + dateTimePicker1.Value.Date + "' AND  '" + dateTimePicker2.Value.Date + "' Order By ExpenseDate";
            if (query != "")
            {

                SqlConnection conn = new SqlConnection(this.connectionString);
                SqlCommand comm = new SqlCommand(query, conn);

                SqlDataAdapter adap = new SqlDataAdapter();
                DataSets.CreditVoucher dataset = new DataSets.CreditVoucher();
                CreditVoucherDatetoDateCrystalReport crp = new CreditVoucherDatetoDateCrystalReport();

                try
                {
                    conn.Open();
                    adap.SelectCommand = comm;
                    adap.Fill(dataset, "DataTable1");

                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message.ToString());
                }
                finally
                {
                    conn.Close();
                }
                crp.SetDataSource(dataset);

                ParameterValues v = new ParameterValues();
                ParameterDiscreteValue dv = new ParameterDiscreteValue();

                dv = new ParameterDiscreteValue();
                dv.Value = this.reportQuary;
                v.Add(dv);
                crp.DataDefinition.ParameterFields["report_query"].ApplyCurrentValues(v);

                crystalReportViewer2.ReportSource = crp;
            }
        }
 public virtual CrystalDecisions.CrystalReports.Engine.ReportDocument CreateReport()
 {
     CreditVoucherDatetoDateCrystalReport rpt = new CreditVoucherDatetoDateCrystalReport();
     rpt.Site = this.Site;
     return rpt;
 }