export as a pdf file using crystal report

I have code sample here, I can save as a PDF file directly but what I want to do is to show client first pdf file, and allow users to save it. How do I achieve this?

ReportDocument rpt = new ReportDocument();
rpt.Load(@"C:CrystalReport2.rpt");

rpt.SetDataSource(datatablesource);

ExportOptions rptExportOption;
DiskFileDestinationOptions rptFileDestOption = new DiskFileDestinationOptions();
PdfRtfWordFormatOptions rptFormatOption = new PdfRtfWordFormatOptions();
string reportFileName = @"C:SampleReport.pdf";
rptFileDestOption.DiskFileName = reportFileName;
rptExportOption = rpt.ExportOptions;
{
    rptExportOption.ExportDestinationType = ExportDestinationType.DiskFile;
    //if we want to generate the report as PDF, change the ExportFormatType as "ExportFormatType.PortableDocFormat"
    //if we want to generate the report as Excel, change the ExportFormatType as "ExportFormatType.Excel"
    rptExportOption.ExportFormatType = ExportFormatType.PortableDocFormat;
    rptExportOption.ExportDestinationOptions = rptFileDestOption;
    rptExportOption.ExportFormatOptions = rptFormatOption;
}

rpt.Export();

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

Here is my code:

dbObj = new ConnectDB();
query = "SELECT Student.*, School.*FROM Student where admissionnumber = '" + reg_number + "'";
DataSet ds = dbObj.Fetch_Data(query, "DataView");
ReportDocument rd;
rd = new ReportDocument();
rd.Load(Application.StartupPath + "\StudentReg.rpt");
//rd.Load("StudentReg.rpt");
rd.SetDataSource(ds);
crv.ReportSource = rd;
crv.Refresh();
if(File.Exists(@"D:" + reg_number + ".pdf"))
    File.Delete(@"D:" + reg_number + ".pdf");
rd.ExportToDisk(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, @"D:" + reg_number + ".pdf");

Method 2

ExportOptions CrExportOptions ;
DiskFileDestinationOptions CrDiskFileDestinationOptions = new DiskFileDestinationOptions();
PdfRtfWordFormatOptions CrFormatTypeOptions = new PdfRtfWordFormatOptions();
CrDiskFileDestinationOptions.DiskFileName = "C:\SampleReport.pdf";
CrExportOptions = doc.ExportOptions;
{
    CrExportOptions.ExportDestinationType = ExportDestinationType.DiskFile;
    CrExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
    CrExportOptions.DestinationOptions = CrDiskFileDestinationOptions;
    CrExportOptions.FormatOptions = CrFormatTypeOptions;
}
doc.Export();

Code like this………..

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0