How to stop project build on first error?

Hi Nicky, Unfortunately, this is not possible.

I think this will be useful feature.

In most cases user want to see only first error, with auto-navigation on error place in code editor.

Nicky, in most cases, this is not possible. After error Rider builds only parts that not depends on this error. Also, the "build errors" window opens automatically from where you can navigate to errors by double-click.