DirectoryInfo outputDirectory = new DirectoryInfo(HttpRuntime.AppDomainAppPath + "temFile\\");
// Provide settings for your rendering output.
GrapeCity.ActiveReports.Export.Pdf.Page.Settings pdfSetting = new GrapeCity.ActiveReports.Export.Pdf.Page.Settings();
// Set the rendering extension and render the report.
GrapeCity.ActiveReports.Export.Pdf.Page.PdfRenderingExtension pdfRenderingExtension = new GrapeCity.ActiveReports.Export.Pdf.Page.PdfRenderingExtension();
outputProvider = new GrapeCity.ActiveReports.Rendering.IO.FileStreamProvider(outputDirectory, FileName);
// Overwrite output file if it already exists
outputProvider.OverwriteOutputFile = true;