I have a .NET project. I tried to add a CS-based report to it using the Visual Studio item template. However, when I opened it, I encountered an error message, which wasn't helpful.
After reaching out to the technical support, I was told that the Visual Studio Report Designer was not supported in .NET projects, and the alternative was either to open the CS-based report through the Standalone Report Designer or use TRDP reports (recommended for new reports) instead.
It would be nice if there were some warning about this, as it would save me some time and confusion, as at first, when I encountered the error message, I took the assumption that something was corrupted with my project.