viewer 继承问题

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本帖最后由 Crystal.Li 于 2021-11-19 17:20 编辑

  继承报错问题
public  class ViewerControl : GrapeCity.ActiveReports.Viewer.Win.Viewer
{
      private ResultDataSet InRs = new ResultDataSet();
      public void SaveAS(string pathFileName)
      {
         string pathName = SaveFilePathName(pathFileName);
         GrapeCity.ActiveReports.Export.Pdf.Section.PdfExport PDFEx = new GrapeCity.ActiveReports.Export.Pdf.Section.PdfExport();
         base.Export(PDFEx, new System.IO.FileInfo(pathName));
      }

      void Document_LocateDataSource(object sender, GrapeCity.ActiveReports.LocateDataSourceEventArgs args)
      {
         args.Data = ((DataSet)InRs);
         args.Data = null;
      }