Odd error when switching to/from Print Preview when a report has expired

[Stephen McDaniel]

We are using the WPF Report Viewer with a REST reporting endpoint.  If you try to switch to/from Print Preview mode and the report happens to have expired, we get a message in the report viewer that says "A problem occurred while creating a report instance".  I would have expected to instead get a message saying something like "Report is unavailable or session has expired".  Our users are used to getting the 'session expired' message from our Silverlight app (using the SL Report Viewer) as that message shows up in various cases.

I know it is a minor, mostly cosmetic issue but having a report expire is not totally uncommon for us so we'd like the user experience to be as friendly as possible.

This may be related to a very similiar issue we ran into with the SL Report Viewer.  In the past, doing these same steps actually lead to a Null Reference Exception message being shown.  See: http://www.telerik.com/forums/null-reference-exception-when-switching-to-from-print-preview-when-a-report-has-expired

[Nasko]

Hello Stephen,

We have logged this issue in our bug-tracking system and we are going to fix it in a future release. Thank you for letting us know about it.

Regards,
Nasko
Telerik by Progress

[Stephen McDaniel]

On a very related note, I also noticed problems with the Export process if the report is expired.  When I select an export type from the Export dropdown, the report viewer just flashes and then nothing happens.  When looking at the network calls, I see a "Client with ID '1111-11' not found. Expired" message coming back to the app but it appears that error isn't really handled.  It would be nice if that also put up a friendly message like "Report is unavailable of session has expired".

[Katia]

Hi Stephen,

Thank you again for noticing another issue with error handling. It will be logged into our system for further improvements.

Regards,
Katia
Telerik by Progress