Framework Versions
C# C# 4.0 .NET Framework 4.0 Visual Studio 2010 C# 5.0 .NET Framework 4.5 Visual Studio 2012/2013 C# 6.0 .NET Framework 4.6 Visual Studio 2013/2015 C# 7.0 .NET Core Visual Studio 2017 Web API: Web API 1 Web API 2