Set Crystal Reports Local Parameeters

Question

Iam Using This Code For Crystal Report (Pdf Download ) Without ReportViewer. Its Working But

I need To Set Local Parameeters For This Report. I Tryed But Showing Error 

Missing Parameter Values

 

ReportDocument reportDocument = new ReportDocument();

Reports.dsIssueFilter dsCITReport = new Reports.dsIssueFilter();

reportDocument.Load(Server.MapPath("~/WebForms/Reports/CrystalReport1.rpt"));

 

string reportPath = string.Empty;

if (!string.IsNullOrEmpty(ConfigurationManager.AppSettings["ReportsPDFPath"])) 

{

reportPath = ConfigurationManager.AppSettings["ReportsPDFPath"].ToString();

}

dsCITReport.Tables["spFilterIssueDetailForReport"].Merge(dtRptData.Tables[0]); //Set Data

reportDocument.SetDataSource(dsCITReport);

string reporFullPath = reportPath + ".pdf";

 

if (reportDocument.IsLoaded)

{

reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, Server.MapPath(reporFullPath));

Response.ContentType = "Application/pdf";

Response.AppendHeader("Content-Disposition", "attachment; filename=RequestForm.pdf");

Response.TransmitFile(Server.MapPath(reporFullPath));

Response.End();

}

 SomeOne Can Give me Details For This