Crystal Report

OAF_CrystalReport rpt = new OAF_CrystalReport();          
            Conn = new SqlConnection(ConnString);
            if (Conn.State == ConnectionState.Closed)
            {
                Conn.Open();
            }

            Cmd = new SqlCommand("[OAF_Final_Print_cristal_Report]", Conn);
            Cmd.CommandType = CommandType.StoredProcedure;
            Cmd.Parameters.AddWithValue("@cust_id", cmb_customer.SelectedValue);
            Cmd.Parameters.AddWithValue("@order_no", txt_order_no.Text);
            Adp = new SqlDataAdapter(Cmd);
            DataSet ds = new DataSet();
            DataTable dt = new DataTable();
            Adp.Fill(ds);

            dt = ds.Tables[0];

            Conn.Close();

            rpt.SetDataSource(dt);
            crystalReportViewer1.ReportSource = rpt;
            crystalReportViewer1.Refresh();