How to set .NET Core in #if statement for compilation

Question

I created a multi-targeted framework project. I use something like this:

  #if NET40
    Console.WriteLine("Hello from .NET Core 4");
  #endif

But I can't find a wildcard for .NET Core. I tried:

   #if NETCOREAPP1.0
     Console.WriteLine("Hello from .NET Core");
   #endif

But it is not valid statement.

Answer 1

You need an underscore, _, instead of a point:

NETCOREAPP1_0 or the more recent NETCOREAPP1_1 and NETCOREAPP2_0

The article Developing Libraries with Cross Platform Tools includes a list for the different preprocessor symbols.

.NET Framework 2.0: NET20

.NET Framework 3.5: NET35

.NET Framework 4.0: NET40

.NET Framework 4.5 --> NET45

.NET Framework 4.5.1 --> NET451

.NET Framework 4.5.2 --> NET452

.NET Framework 4.6 --> NET46

.NET Framework 4.6.1 --> NET461

.NET Framework 4.6.2 --> NET462

.NET Framework 4.7.0 --> NET47

.NET Framework 4.7.1 --> NET471

.NET Framework 4.7.2 --> NET472

.NET Standard Any --> NETSTANDARD

.NET Standard 1.0 --> NETSTANDARD1_0

.NET Standard 1.1 --> NETSTANDARD1_1

.NET Standard 1.2 --> NETSTANDARD1_2

.NET Standard 1.3 --> NETSTANDARD1_3

.NET Standard 1.4 --> NETSTANDARD1_4

.NET Standard 1.5 --> NETSTANDARD1_5

.NET Standard 1.6 --> NETSTANDARD1_6

.NET Standard 2.0 --> NETSTANDARD2_0

.NET Standard 2.1 --> NETSTANDARD2_1