I am working on a Winforms app that must run entirely locally - when in use the computer will not be on any network. It is interfacing with a local SQL Server Express database.
I have a report localReport_SelectedSwitchList.rdlc that references, and passes a parameter to, a subreport (localReport_SelectedWayBills.rdlc).
The main report renders correctly but the subreport returns an error:
The subreport name has been entered correctly, though it had to be typed because no pull-down list or dialog option is offered.
I have tried variations: with extension/without extension, with a '.' in front. A path with backslashes (\) will not compile. Note that the error message includes the correct path and name.
I have found other similar questions posted going back many years but none have been resolved.