Refreshing ReportDocument without reloading data from database

Question

Hi,
I'm using "Crystal Reports for Visual Studio" version 13.0.13.1597, more specific CrystalReportViewer and ReportDocument.
How do I get the report to refresh when I change the paper orientation?
For instance: I show the user the PageSetupDialog, user switches from Portrait to Landscape. After the dialog is closed, I give the report these new settings:
this.report.PrintOptions.CopyFrom(pageSetupDialog.PrinterSettings, pageSetupDialog.PageSettings);
Now the preview should update the report to show it (for instance) in landscape. To do this, I'm using viewer.RefreshReport() right now. But this also triggers that the data is retrieved from the database again.
Is there any way to trigger a reformatting (or "layout update") of the report without the need of also querying the database again?
Thanks,
Markus

Answer 1

I found a way to make this work.
Here's my work flow:
1. Open the report
2. Log onto the database
3. Preview the report using a View Report button
4. Change the paper size etc. and use RAS to update the printer info:
     rptClientDoc.PrintOutputController.ModifyPrintOptions(newOpts);
     I have a separate button for updating the selected printer options. should be the same as you are doing.
There is a RAS equivolent CopyTo API also.
5. Hit the View Report button again. I have a separate button to view the report. It simply checks if RAS modified the report and then sets the viewer to the appropriate RPT or RCD object.
In #4 I set a flag to use the RAS object and then test which one to use in my View Report button:
try
    if (!IsRpt)
        crystalReportViewer1.ReportSource = rptClientDoc.ReportSource;
    else
        crystalReportViewer1.ReportSource = rpt;
catch (Exception ex)
    btnSQLStatement.Text = "ERROR: " + ex.Message;
Confirmed using SQL Profiler when I hit the View report the second time it is not hitting the DB again.
If you are not using a View Report button then disable the Refresh button and create your own, search here for a sample on how to enable your own print button and you'll find a sample app attached.
Thanks again
Don
PS - I will not be pinging DEV to add this ability to the Viewer.