Crystal Report throwing Missing Parameter while PDF export

Question

Crystal Report throwing Missing Parameter while PDF export

only some times .

 

DateTime prntdate=DateTime.Now;

string printeddate=prntdate.ToString("dd/MM/yyyy");

if (!Directory.Exists(@"D:/Bills/" + printeddate))

{

Directory.CreateDirectory(@"D:/Bills/" + printeddate);

}

CrDiskFileDestinationOptions.DiskFileName = "D:\\Bills\\" + printeddate + "\\" + label1.Text + ".pdf";

CrExportOptions = crystalReport.ExportOptions;

{

CrExportOptions.ExportDestinationType = ExportDestinationType.DiskFile;

CrExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;

CrExportOptions.DestinationOptions = CrDiskFileDestinationOptions;

CrExportOptions.FormatOptions = CrFormatTypeOptions;

}

crystalReport.Export();