有一个更好的方法吗 ？

Question

这就是它。我有一个工作正常的数据集模型，它从数据库导入数据并将其提供给水晶报告。这个解决方案有效但很耗时我想知道是否有其他方法可以做到这一点...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Oracle.DataAccess.Client;
using System.Data;
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;


namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string connetionString = null;
            OracleConnection connection;
            OracleDataAdapter OracleAdapter;
            DataSet ds = new DataSet();
            string firstSql = null;


            connetionString = "datasoruce";

            connection = new OracleConnection(connetionString);
               string secondSql = "select statementnumber from erocks.statement_data_domestic";
                connection.Open();
                //OracleAdapter = new OracleDataAdapter(firstSql, connection);
                //OracleAdapter.Fill(ds, "domestic");
                OracleAdapter = new OracleDataAdapter(secondSql, connection);
                OracleAdapter.Fill(ds, "statement");
                connection.Close();
                ReportDocument reportDoc = new ReportDocument();
                reportDoc.Load(@"c:\users\desktop\statement.rpt");


            DataTable stmt = ds.Tables["statement"];

            string stmtnumber="";
            for (int i = 0; i < stmt.Rows.Count - 1; i++)
            {
                stmtnumber = stmt.Rows[i][0].ToString();

                firstSql = @"SELECT DISTINCT statement_header.statementnumber,
                     statement_details.invoicedate,
                     statement_details.invoicenumber,
                     statement_details.invoicetotal,
                     statement_details.doc_type,
                     statement_header.statementtotal,
                     statement_details.bunumber_ru,
                     statement_details.bunumber,
                     statement_details.description,
                     statement_details.reference_number,
                     statement_header.remto_zip,
                     statement_header.remto_city,
                     statement_header.remto_state,
                     statement_header.remto_mailname,
                     statement_header.remto_addr1,
                     statement_header.remto_addr2,
                     statement_header.remto_addr3,
                     statement_header.soldto_city,
                     statement_header.soldto_state,
                     statement_header.soldto_zip,
                     statement_header.soldto_addr1,
                     statement_header.soldto_addr2,
                     statement_header.soldto_addr3,
                     statement_header.balance_forward,
                     statement_header.statementdate,
                     statement_header.custid,
                     statement_header.custname,
                     statement_header.phone_prefix,
                     statement_header.phone_number,
                     statement_details.purchases,
                     statement_details.payments,
                     statement_details.misc_credit2,
                     statement_details.misc_credit1,
                     statement_header.company_number,
                     statement_header.statementpurchases,
                     statement_header.statementpayments,
                     statement_header.statementmisc_credit1,
                     statement_header.statementmisc_credit2,
                     statement_header.nomailnoprint,
                     statement_header.SOLDTOCOUNTRYCODE,
                     statement_header.SOLDTOCOUNTRYNAME,
                     statement_header.CREDITZEROFLAG
       FROM STATEMENT_DATA_DOMESTIC statement_header
            INNER JOIN STATEMENT_DATA_DETAILS statement_details
               ON statement_header.statementnumber =
                     statement_details.statementnumber
                        where statement_header.statementnumber="+stmtnumber;
                connection.Open();
                OracleAdapter = new OracleDataAdapter(firstSql, connection);
                OracleAdapter.Fill(ds, "domestic");

                OracleAdapter.Dispose();
                connection.Close();
                reportDoc.SetDataSource(ds.Tables["domestic"]);
                ExportOptions CrExportOptions;
                DiskFileDestinationOptions CrDiskFileDestinationOptions = new DiskFileDestinationOptions();
                PdfRtfWordFormatOptions CrFormatTypeOptions = new PdfRtfWordFormatOptions();
                CrDiskFileDestinationOptions.DiskFileName = @"d:\pdf\"+ stmtnumber + ".pdf";
                CrExportOptions = reportDoc.ExportOptions;
                {
                    CrExportOptions.ExportDestinationType = ExportDestinationType.DiskFile;
                    CrExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
                    CrExportOptions.DestinationOptions = CrDiskFileDestinationOptions;
                    CrExportOptions.FormatOptions = CrFormatTypeOptions;

                }
                reportDoc.Export();
                ds.Tables["domestic"].Clear();
            }
                }
            }

        }

Answer 1

如果检索所有语句的数据，将其更快，请按报告中的statementID对其进行分组，并按此组突发显示报告。 Bursting将为每个组生成一个单独的文件。通过这种方式，您将能够通过一次调用数据库生成所有文件。