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# Quickly check C# compiler and language version

Just add `#error version` anywhere in a C# file and you'll see a tooltip with the information:

![](https://804009323-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M5W22ESTtVWB8uBjgpA%2Fuploads%2Fgit-blob-4392ab089121f039629bcb85a316b7d1a197ea9c%2Fcompilerversion.png?alt=media\&token=8fcaac10-4e35-41b7-9ef4-79d457c79933)