我实现了一个将水晶报表导出为 pdf 的循环。这个想法是用它的连接实例化初始报告，然后在循环中应用参数，然后再导出为 PDF（所以我为每条记录获取一个 pdf），但报告会继续使用第一个循环执行的数据导出 pdf。应用新参数后如何强制它刷新数据？
示例代码：
ReportDocument reportDoc=new ReportDocument();
reportDoc.Load("c:\\reportx.rpt");
ConnectionInfo cinfo = FunctionLibrary.getCrystalConection();
foreach (Table table in reportDoc.Database.Tables)
{
table.LogOnInfo.ConnectionInfo = cinfo;
table.ApplyLogOnInfo(table.LogOnInfo);
}
string[] docnumbers=new[]{"1","2","3","4"};
for(int i=0;i<docnumbers.Lenght; i++)
{
report.SetParameterValue(0, docnumbers[i]);
report.Refresh();
DiskFileDestinationOptions CrDiskFileDestinationOptions = new DiskFileDestinationOptions();
PdfRtfWordFormatOptions CrFormatTypeOptions = new PdfRtfWordFormatOptions();
CrDiskFileDestinationOptions.DiskFileName = "C:\\generatedpdf " + docnumbers[i] + ".pdf";
ExportOptions CrExportOptions = reportDoc.ExportOptions;
{
CrExportOptions.ExportDestinationType = ExportDestinationType.DiskFile;
CrExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
CrExportOptions.DestinationOptions = CrDiskFileDestinationOptions;
CrExportOptions.FormatOptions = CrFormatTypeOptions;
}
reportDoc.Export();
}
reportDoc.Close();