Hi there!

Our reports use OLAP based parameters for fairly large dimensions (>80k members). The ReportViewer WebControl manages all their ValidValues in Javascript using HTML hidden input fields — resulting in some 50MB invisible checkbox mess that's killing most browsers.

As our ASP.Net application has its own parameter management (using URL access and POSTing parameters), we don't need any of this Javascript + hidden field blunder. Currently we are using the redistributable ReportViewerControl 2008 SP1with SSRS 2005 SP2 embedded in an iframe.

Passing ...rc:Parameters=false... hides all parameter controls inside the toolbar, but still renders all hidden fields — for whatever purpose (there is no point in having all this hidden fields without any means to manipulate filter values). Passing ...rc:Toolbar=false... gets rid of these pesky hidden fields, but we'd really like to keep the toolbar in place (for paging and printing).

Is there anything we can do about it, maybe some undocumented rc:NoWeReallyDontWantTheseHiddenFieldsButWouldLikeToKeepTheToolbar=true?

Thanks and best regards,
Thomas