Thanks for reaching out.
Follow these steps to resolve dependency issue:
1. Check your project’s target framework
- If this is desktop WinfFOrms/WPF project (classic .NET Framwork or .NET Core/NET 5-8), make sure the project's TargetFramework is compatible with the NuGet Package's dependencies.
- For example- if your project is targetting an older .NET framwork version(e.g., net48 or lower) it may not satisfy newer package dependencies.
2. Update the required dependency packages
- Open Package Manager Console (in Visual Studio) or Manage NuGet Packages.
- Ensure that System.Threading.Tasks.Extensions is installed and has version 4.5.4 or higher. The error message explicitly mentions this version threshold.
- Also ensure Microsoft.Bcl.AsyncInterfaces is installed with version 8.0.0 or higher (since the error says…. Microsoft.Bcl.AsyncInterfaces [8.0.0,]).
- After installing/updating these dependencies, retry adding Microsoft.Data.SqlClient.
3. Clear any conflicting versions/package cache
- Sometimes leftover or older package references cause conflicts.
- In Visual Studio: go to Tools-> NuGet Package Manager -> Package Manager Settings -> General -> Clear All NuGet Caches.
- Delete bin and obj folders of your project (clean build) and rebuild.
4. Check Project File (.csproj)
- Open your .csproj, look for <PackageReference> entries; confirm that you have something link:
<PackageReference Include= “System.Threading.Tasks.Extensions” Version=”4.5.4” /> <PackageReference Include= “Microsoft.Bcl.AsyncInterfaces” Version=”8.0.0” /> <PackageReference Include= “Microsoft.Extensions.DependencyInjection.Abstractions” Version=”8.0.2” /> <PackageReference Include=”Microsoft.Data.SqlClient” Version=”x.y.z” /> - Adjust versions as needed (you may choose a version slightly higher than the minimum if available).
5. Rebuild and test
- After making the changes, do a clean and then rebuild your solution.
- Then retry installing the Microsoft.Data.SqlClient package (or if you already did, uninstall+ reinstall).
Additional notes and considerations
- The Microsoft.Extensions.DependencyInjection.Abstractions package version 8.0.2 is published and available.
- The error is typical when newer libraries depend on newer version of “foundation” package (like System.Threading.Tasks.Extensions) that are not yet present in the project.
- If your project is a classic .NET framework project (e.g., net48) you may run into compatibility issues with some newer packages meant for .NET 5+/NET 6+. In that case consider using versions of the packages aligned with your target framework.
- It may help to explicitly install the dependencies before installing the main package to avoid version conflicts.
Let me know if you need any further help with this. We'll be happy to assist.
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