Having trouble referencing .NET Standard class library using SQLProvider from .NET Core project

[Arrow7000]

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Reproduction of problem here: https://github.com/Arrow7000/SqlProviderTest

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I'm fairly new to the .NET world so am having trouble wrapping my head around exactly what the problem is.

I've tried to use the SQL type provider directly in an F# .NET Core project, but had a bunch of problems getting it to work. From what I can tell that's due to incompatibilities between .net core and type providers.

So what I am trying instead is to have the SQL type provider code encapsulated in a .NET Standard project that I can reference from my main Core project.

I've managed to reproduce the problem in a minimal GitHub repo located here which demonstrates both that

• the type provider is working in Visual Studio 2019 with IntelliSense, but
• despite this I still get a build error when I try to start the Main project

The build error is:

Unable to find the file 'C:\projects\SqlProviderTest\SQLStuff\bin\Debug\netstandard2.0\SQLStuff.dll' in any of
 C:\Program Files\dotnet\sdk\NuGetFallbackFolder\microsoft.netcore.app\2.2.0\ref\netcoreapp2.2
 C:\projects\SqlProviderTest\Main
 C:\Users\Aron\.nuget\packages\fsharp.core\4.6.2\lib\netstandard1.6

Why isn't the project reference simply working as expected? I've tried adding <Private>True</Private> to the project reference but that didn't make any difference

I know there are a bunch of similar issues in this repo but none of the solutions have worked for me.

I originally posted this on StackOverflow but someone there told me this repo might be a better place to ask the question.

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P.S. in case it matters, I'm developing on Windows but the app gets deployed on a Docker container.

[Thorium]

I would expect you need not only MySqlConnector.dll but also its dependencies: System.Buffers.dll, System.Threading.Tasks.Extensions.dll, System.Runtime.InteropServices.RuntimeInformation.dll, System.Data.Common.dll

See the example: https://github.com/fsprojects/SQLProvider/tree/master/tests/SqlProvider.Core.Tests/MySql

If you clone this repo, does the example code work for you?

[Arrow7000]

@Thorium I've now added those packages both as project dependencies and also directly as DLLs in this branch https://github.com/Arrow7000/SqlProviderTest/tree/add-deps. It still fails with the same error.

I have cloned the repo and it doesn't work. When I try to run dotnet build it fails with this error

When I try to run it in Visual Studio 2019 it fails because it can't find F# in the path - I think I have a newer F# version installed. But either way I don't want to hardcode my local F# path because that won't work when I deploy and build the code in a Docker container.

[Thorium]

For this project to build, you have to first restore packages by e.g. running build.cmd

On Tue, 14 May 2019, 18:02 Aron Adler, [email protected] wrote:

@Thorium https://github.com/Thorium I've now added those packages both as project dependencies and also directly as DLLs in this branch https://github.com/Arrow7000/SqlProviderTest/tree/add-deps. It still fails with the same error.

I have cloned the repo and it doesn't work. When I try to run dotnet build it fails with this error

[image: image] https://user-images.githubusercontent.com/13225609/57717001-232cd200-7672-11e9-9dd2-43f98b109515.png

When I try to run it in Visual Studio 2019 it fails because it can't find F# in the path - I think I have a newer F# version installed. But either way I don't want to hardcode my local F# path because that won't work when I deploy and build the code in a Docker container.

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[Thorium]

I tried to clone your repo. You need to have the ResolutionPath to pointing a folder where these dlls are.

[Arrow7000]

@Thorium I just tried adding the resolution path. See this commit https://github.com/Arrow7000/SqlProviderTest/commit/441e62a00dcc767a1434db01028f984b45f7f996

It's still giving the exact same error though 😕

However the SQLStuff.dll not being found is not the cause, but the effect of some other error preventing the dll from being built in the first place. How do I find out what this original error is?

[Thorium]

Should be fixed already