The RDC model had a
CRViewer1.RefreshEx(False)
method that allowed changes to formula values (via code) to be reflected in the viewer without resetting the report source.
But with the .NET model, the same thing seems to require re-assigning the viewer's report source (to the existing report source).
CRViewer1.ReportSource = MyExistingReportObject
which causes a distracting screen refresh (including a brief display of gray area and progress animation).
Are you aware of a .NET method that allows the viewer to simply reflect changes to the underlying report source without resetting the ReportSource or without the progress animation?
