How can I ensure that appsettings.dev.json gets copied to the output folder?

Question

I have three configuration files, one for each environment:

1. appsettings.json -> production
2. appsettings.dev.json -> development
3. appsettings.s

Answer 1

In solution explorer right click on your file that want to be copied to output (in your case appsettings.dev.json) and hit Properties, In Properties window pane set Copy To Output Directory option to Copy Always. By doing so, every time you build your project, your file will be copied into output directory (your project bin or release directory depending on your build profile)