This is a different version of the helloworld example, using the “classic” .csproj files, the only format supported by VS2013 (and older versions of mono). You can still use gRPC with the classic .csproj files, but using the new-style .csproj projects (supported by VS2017 v15.3 and above, and dotnet SDK) is recommended.
Greeter.slnwith Visual Studio, Monodevelop (on Linux) or Xamarin Studio (on Mac OS X)
The NuGet add-in available for Xamarin Studio and Monodevelop IDEs is too old to download all of the NuGet dependencies of gRPC.
Using these IDEs, a workaround is as follows:
nuget update -self.
Run the server
> cd GreeterServer/bin/Debug > GreeterServer.exe
Run the client
> cd GreeterClient/bin/Debug > GreeterClient.exe
You can also run the server and client directly from the IDE.
On Linux or Mac, use
mono GreeterServer.exe and
mono GreeterClient.exe to run the server and client.
You can find a more detailed tutorial in gRPC Basics: C#