Dataset "" is not exists

Comments

• AlexTZ

  February 2005 edited 4:25AM

  When converting old reports to 3.0, you should go designer, Report|Data menu and select desired datasets.
• visiond

  February 2005 edited 4:25AM

  Thanks your attention! I have done just like what you said, but the error still occurs during previewing report.
  
  Maybe the key poing is i use a dynamic data. The dataset of report is a clientdataset in my application. I always create a clientdataset in runtime, then clientdataset loads data from a xml file. then link the clientdataset to TfrxDBDataset, everything is ok in FR2.5, but when i migration fastreport from 2.5 to 3.09,i get the following error: Dataset "" is not exists.
  
  It runs ok even in FR3.09 if i use a predefined datasource.
  

  ---

  procedure TForm1.Button1Click(Sender: TObject);
  var
  mast: TClientDataSet;
  frmast: TfrxDBDataset;
  report: TfrxReport;
  begin
  mast := TClientDataSet.Create(self);
  mast.LoadFromFile('data.xml');
  mast.Active := true;
  frmast := TfrxDBDataSet.Create(self);
  frmast.DataSet := mast;
  report := TfrxReport.Create(self);
  report.LoadFromFile('test.fr3');
  report.ShowReport;
  end;
  
• AlexTZ

  February 2005 edited 4:25AM

  I'd like to look at test.fr file, could you send it to tz@fast-report.com?
• visiond

  February 2005 edited 4:25AM

  i have send the test code to you, please check it.