telerik gridview export to pdf in win forms

Question

telerik gridview export to pdf in win forms.

hi i want to get pdfexport from telerik grid and i search on the web and find answer on Telerik gridview export images not working winforms

private void RunExportToPDF(string fileName, ref bool openExportFile)
    {
        GridViewPdfExport pdfExporter = new GridViewPdfExport(this.dataGridView1);
        pdfExporter.RunExport(@"C:\New.pdf", new PdfExportRenderer());
  
    }

but i still have error. any one can help me?? enter image description here