DataSet取得了数据，但是跑出来的PDF文件却没有内容,真是奇怪！
//设置数据源和报表格式
  ReportDocument reportDoc = new ReportDocument();
  reportDoc.Load(Server.MapPath("R1119.rpt"));
  DataSet dsrpt=new DataSet();
  dsrpt = getRptDs(TxbNo.Text.Trim());//取得数据
  reportDoc.SetDataSource(dsrpt);
   
  //生成文件
  string fileUrl = "";
  DiskFileDestinationOptions objFile = new DiskFileDestinationOptions();
  ExportOptions objExport = reportDoc.ExportOptions;
  objExport.ExportDestinationOptions = objFile;
  objExport.ExportDestinationType = ExportDestinationType.DiskFile;
  switch (fileType)
  {
  case "Pdf":
  Response.ContentType = "application/pdf";
  objExport.ExportFormatType = ExportFormatType.PortableDocFormat;
  objFile.DiskFileName = Server.MapPath("~/SCFOLDER/PRINT/R1119.pdf");
  fileUrl = "~/SCFOLDER/PRINT/R1119.pdf";
  break;
  case "Doc":
  Response.ContentType = "application/ms-excel";
  objExport.ExportFormatType = ExportFormatType.WordForWindows ;
  objFile.DiskFileName = Server.MapPath("~/SCFOLDER/PRINT/R1119.doc");
  fileUrl = "~/SCFOLDER/PRINT/R1119.doc";
  break;
  case "Xls":
  Response.ContentType = "application/vnd.ms-excel";
  objExport.ExportFormatType = ExportFormatType.Excel;
  objFile.DiskFileName = Server.MapPath("~/SCFOLDER/PRINT/R1119.xls");
  fileUrl = "~/SCFOLDER/PRINT/R1119.xls";
  break;  
  }
  reportDoc.Export();
  Response.Redirect(fileUrl);  


  /// <summary>
  /// 取得报表的数据
  /// </summary>
  /// <param name="no">单号</param>
  /// <returns></returns>
  private DataSet getRptDs(string no)
  {
  DS1119 ds = new DS1119();
  string taskSql = "select task_sno,task_no,task_appco,task_appdpt,task_type,task_appdt,task_appman,task_status,task_expdt,task_respco,task_respdpt,task_respman,task_chkman,task_chkdt,task_aptdt,task_rejdt,task_hitrate,task_cfmman,task_cfmdt,task_topic,task_content,task_att1fname,task_att1url,task_att1uptime,task_att2fname,task_att2url,task_att2uptime from task where task_no='" + no + "'";
  string tasksSql = "select tasks_sno,tasks_no,tasks_dt,tasks_man,tasks_content,tasks_hitrate,tasks_att1fname,tasks_att1url,tasks_att2fname,tasks_att2url from tasks where tasks_no='" + no + "'";
  db database = new db();
  database.RunSqlOutDs(ds, "task", taskSql);//主表
  database.RunSqlOutDs(ds, "tasks", tasksSql);//从表
  return ds;  
  }  

  DataSet取得了数据，但是跑出来的PDF文件却没有内容,真是奇怪！
  不知道哪里出了问题，请指教？
 

------解决方案--------------------
没有写入成功被，检查下你写入PDF的代码！！！