从.net库引用.NET Standard 1.6库

Question

I'm trying to use a library in my application, I'm kinda new to this I'm following this instructions, https://docs.microsoft.com/en-us/dotnet/core/tutorials/consuming-library-with-visual-studio?tabs=csharp

where basically I've opened the library solution and added a new project to it, however when I run I get the following error:

Project '..\\src\\gdax.netcore.csproj' targets 'netstandard1.6'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.5'. GdApp1

I'm not sure how to fix this, I've tried changing various target versions in both the library and my project, if I set my project target to 4.6.1 I get missing directives or assembly references, related to the library I'm using.

I'm trying to use this library https://github.com/sefbkn/gdax.netcore my code is basically a straight copy of their example at this point

the missing references and errors are:

The type or namespace name 'RequestAuthenticator' could not be found (are you missing a using directive or an assembly reference?)  

The type or namespace name 'ProductClient' could not be found (are you missing a using directive or an assembly reference?) 

The type or namespace name 'gdax' could not be found (are you missing a using directive or an assembly reference?)  

The 'await' operator can only be used within an async method. Consider marking this method with the 'async' modifier and changing its return type to 'Task'.    

Answer 1

There are multiple steps here

1. Check you are using a recent version of VS (suggested 15.5.* for .NET 4.7.1+netstandard support)
2. Target at least .NET 4.6.1 to reference netstandard1.6 libraries
3. Follow https://github.com/dotnet/announcements/issues/31 to resolve library loading issues. This involves enabling automated binding redirect generation for the application using it and modifying the csproj for unit tests.

Alternatively, wait for .NET 4.7.2 and Visual Studio 2017 version 15.6 to remove the need for manual steps.

Answer 2

You also need to NETStandard.Library nuget package to your project that tries to use any .Net Standard dll.

https://www.nuget.org/packages/NETStandard.Library/