C# code generation with Google Protobuf proto2 files

1
votes

I have several .proto files with proto2 syntax. I am trying to auto-generate C# classes using the protoc compiler but I get the error: "C# code generation only supports proto3 syntax.

Other than manually updating each .proto file to conform to proto3 syntax, is there no other way to auto generate C# classes? I'm completely new to protobuf so I know this may sound like a weird question given that the compiler clearly states that I have to follow proto3 syntax - I'm just wondering if there was ever a workaround to getting C# classes to work with proto2 syntax.

1
c#auto-generateprotocol-buffersprotobuf-csharp-port
This early alpha of 3.0.0 says it only supports proto2 - stuartd
Also github.com/jskeet/protobuf-csharp-port which the preceding link's C# support was built on - stuartd

1 Answers

0
votes

You can use the ancient/venerable protogen.exe from the protobuf-net 1.0.0.280 package to do the trick, or the slightly more modern, but still no longer maintained protobuf-csharp-port project.