Hello i think you use ReSharper extencion, i had a same problem. Try to disable it in resharper options add *.proto to ignored code.
You can see more information, about this problem, right there https://developercommunity.visualstudio.com/t/language-service-for-protobuf-doesnt-recognise-sta/689208
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.