How to set default pdf file name in crystal viewer while exporting it

// You could pass the parameters to the web page 
// where you have theCrystalReportViewer control
protected void Page_Load(object sender, EventArgs e)
{
  string reportId = Request["rid"];
  string reportTitle = Request["rtitle"];

  ReportDocument reportDocument = HttpContext.Current.Session[reportId] as ReportDocument;
  this.CommonCrystalReportViewer.ReportSource = reportDocument;
  this.CommonCrystalReportViewer.DataBind();

  // Set the default export file name for the report.
  this.CommonCrystalReportViewer.ID = reportTitle;
}

As far as I know, Crystal Reports can export to PDF format but can't put any password protection on the resulting file (see one of many similar posts here). There are third party tools that you can use to protect the resulting PDFs, but you can't do it during the export. There is one post I found that mentions a successful export with password protection, but after unsuccessfully trying to navigate the mentioned site I gave up. Check it out for yourself here and maybe you have more luck.

Chris