c# - Is there a better way to do this ? -

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so here goes. have model of dataset works fine , imports data database , gives crystal report. solution works time consuming wondering if there other way of doing this... 

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 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="";             (int = 0; < 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        statement_data_domestic statement_header             inner join statement_data_details statement_details                on statement_header.statementnumber =                      statement_details.statementnumber                         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();             }                 }             }          }

it faster if retrieve data statements, group statementid inside report , burst report group. bursting generate separate file each group. in such way able generate files 1 call database.


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