I've just downloaded a sample C# project from Github, and after opening, my references all look like this: What do these warnings mean? I can't find a related message anywhere in the Visual Studio 2019 UI. How do I know what's wrong?

The repo you linked to doesn't have any of these dependencies. It looks like you took some extra steps after downloading the repo. Can you explain what you did? Specifically it looks like you added EntityFramework from NuGet to the project. However it looks like you added multiple versions. This is a .NET 6 project so you should be using Microsoft.EntityFrameworkCore but it looks like you instead added EntityFramework which is the older framework for .NET Framework. Remove that NuGet package from your project. Ensure you have .Microsoft.EntityFrameworkCore referenced instead and then recompile your code. You might need to restart VS to get rid of some of the warnings. For the remainder go to the Output window and select Package Manager . This should show you any actual warnings/errors that are occurring. The rest can be ignored.

Hi @ DavidPendleton-7654, I am the owner of the GitHub repository you used. Although you already have the answer, I would like to first thank you for taking an interest in the repository. Second I would like to pinpoint that this repository is a starting point for a tutorial that explains everything you need to make this repo work. If you have any questions, please let me know! Happy coding!

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Michael Taylor 48,826 Reputation points

2023-03-28T15:00:02.8766667+00:00

The repo you linked to doesn't have any of these dependencies. It looks like you took some extra steps after downloading the repo. Can you explain what you did?

Specifically it looks like you added EntityFramework from NuGet to the project. However it looks like you added multiple versions. This is a .NET 6 project so you should be using Microsoft.EntityFrameworkCore but it looks like you instead added EntityFramework which is the older framework for .NET Framework. Remove that NuGet package from your project. Ensure you have .Microsoft.EntityFrameworkCore referenced instead and then recompile your code.

You might need to restart VS to get rid of some of the warnings. For the remainder go to the Output window and select Package Manager. This should show you any actual warnings/errors that are occurring. The rest can be ignored.
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DavidPendleton-7654 26 Reputation points

2023-03-28T15:44:05.02+00:00

Yes, that is what I did in an attempt to get the project to compile. I deleted my changes and refreshed the project from the original .zip I downloaded from GitHub.

This what the project looks like now:

One interesting note is that if I change the framework version in the project to net5.0, the warnings go away. After adding some missing (?) using statements, the project will compile:

Michael Taylor 48,826 Reputation points

2023-03-28T16:28:36.86+00:00

.NET 5 is out of support. What version of Visual Studio are you running?

If you're running VS 2022 then it should be targeting .NET 6. If you're running VS 2019 then you're restricted to .NET 5. But it sounds like you might have installed the .NET 6 SDK. VS 2019 does not support .NET 6 and hence the warnings I'd wager.

DavidPendleton-7654 26 Reputation points

2023-03-28T17:10:10.6033333+00:00

You are correct. I am running 2019 because I need to do SSIS development.

I do have the .NET 6 SDK installed, as well as the .NET 5 SDK.

I'm going to try a side-by-side 2022 install, and then investigate how far along they are on the former BIDS stuff for 2022.

Thanks for your help!

Michael Taylor 48,826 Reputation points

2023-03-28T17:17:46.5033333+00:00

Yes, use VS 2022 for .NET 6 work and stick with VS 2019 for full SSIS work. The SSIS extension is supported in VS 2022 but it is still in Preview mode and it only works with SQL 2017+ which may be a limiting factor for you.
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