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The Google.Protobuf/project.json file was modified to target .NET 3.5

To build the library, install .NET Core and run the build_package.bat script. The .NET 3.5 Google.Protobuf.dll will be output in src\Google.Protobuf\bin\Release\net35

All the unit tests are green.

Compatible with the protoc v3.0.0

From the original README.md:

This directory contains the C# Protocol Buffers runtime library.

Status: Beta - ready for external testing

Usage

The easiest way how to use C# protobufs is via the Google.Protobuf NuGet package. Just add the NuGet package to your VS project.

You will also want to install the Google.Protobuf.Tools NuGet package, which contains precompiled version of protoc.exe and a copy of well known .proto files under the package's tools directory.

To generate C# files from your .proto files, invoke protoc with the --csharp_out option.

Supported platforms

The runtime library is built as a portable class library, supporting:

You should be able to use Protocol Buffers in Visual Studio 2012 and all later versions. This includes all code generated by protoc, which only uses features from C# 3 and earlier.

Building

Open the src/Google.Protobuf.sln solution in Visual Studio 2015 or later. You should be able to run the NUnit test from Test Explorer (you might need to install NUnit Visual Studio add-in).

Although users of this project are only expected to have Visual Studio 2012 or later, developers of the library are required to have Visual Studio 2015 or later, as the library uses C# 6 features in its implementation. These features have no impact when using the compiled code - they're only relevant when building the Google.Protobuf assembly.

History of C# protobufs

This subtree was originally imported from https://github.com/jskeet/protobuf-csharp-port and represents the latest development version of C# protobufs, that will now be developed and maintained by Google. All the development will be done in open, under this repository (https://github.com/google/protobuf).

The previous project differs from this project in a number of ways: