If I understand correctly, your request is to hide a whole page of a report on export. If yes, this is an equivalent of modifying the report before exporting it, or in other words exporting a new instance of the same report.
For the purpose I suggested you to use custom UI to handle the export, which UI can post to custom controller's action and execute the code for exporting reports programmatically
. In this scenario, you need to create a new report instance, which can be modified before the export.
If you prefer to display and export the same report, to set the currently displayed page after the report is rendered is currently supported through the exposed API - renderingEnd
event and the goToPage
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