Hi Stef,
Search for this kbase: 1765153 - How to customize .NET Viewer Control Export button to manage custom export options and enable Application as the destination
It has a way to get to our buttons, the ID's may change but this may get you to the Zoom ID and then be able to set focus to it so it's on top.
Also, may be to late but CR for VS does allow you to control what type of exports the user can see:
// set up the format export types:
int myFOpts = (int)(
CrystalDecisions.Shared.ViewerExportFormats.RptFormat |
CrystalDecisions.Shared.ViewerExportFormats.PdfFormat |
CrystalDecisions.Shared.ViewerExportFormats.RptrFormat |
CrystalDecisions.Shared.ViewerExportFormats.XLSXFormat |
CrystalDecisions.Shared.ViewerExportFormats.CsvFormat |
CrystalDecisions.Shared.ViewerExportFormats.EditableRtfFormat |
CrystalDecisions.Shared.ViewerExportFormats.ExcelRecordFormat |
CrystalDecisions.Shared.ViewerExportFormats.RtfFormat |
CrystalDecisions.Shared.ViewerExportFormats.WordFormat |
CrystalDecisions.Shared.ViewerExportFormats.XmlFormat |
CrystalDecisions.Shared.ViewerExportFormats.ExcelFormat |
CrystalDecisions.Shared.ViewerExportFormats.ExcelRecordFormat);
//CrystalDecisions.Shared.ViewerExportFormats.NoFormat); // no exports allowed
//int myFOpts = (int)(CrystalDecisions.Shared.ViewerExportFormats.AllFormats);
crystalReportViewer1.AllowedExportFormats = myFOpts;
Don