迁移的Visual Studio Project找不到NuGet包

Question

I am migrating an MVC ASP.NET Visual Studio 2010 project to Visual Studio 2019.

The Visual Studio 2010 project uses some old jQuery NuGet packages that I can't update to current ones due to time constraints and the numerous changes through out the project that doesn't fit into my current scope.

The migrated 2019 project shows a number of errors all relating to the NuGet packages:

NuGet Package restore failed for project MyWebProject: Unable to find version '3.2.0' of package 'Microsoft.jQuery.Unobtrusive.Ajax'.
  C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\: Package 'Microsoft.jQuery.Unobtrusive.Ajax.3.2.0' is not found on source 'C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\'.
  Please see Error List window for detailed warnings and errors.            

NuGet Package restore failed for project MyWebProject: Unable to find version '2.1.1' of package 'jQuery'.
  C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\: Package 'jQuery.2.1.1' is not found on source 'C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\'.
  Please see Error List window for detailed warnings and errors.        
...
...
...

In the Visual Studio 2019 project, when I view the NuGet Installed packages, I see the packages listed but with a message Not available in this source

According to the error messages, Visual Studio is looking for the packages in C:\\Program Files(x86)\\Microsoft SDKs\\NuGetPackages ; however it should be looking in a directory named "packages" that actually contains the packages.

I have placed the packages directory within the same directory as the project (but it would be better to put them in a common resource directory so that the team can find them when/if they are working on this project). I have also edited the repositories.config file within the packages directory to point to the packages.config file for the project.

I can restore all of this back to default if required.

Nothing I have done has helped me get past this problem.

How do I direct Visual Studio 2019 to use the packages that exist within a directory that is not the Program Files directory?

Thanks

Answer 1

How do I direct Visual Studio 2019 to use the packages that exist within a directory that is not the Program Files directory?

According to your error message: Please go Tools=>Options=>Nuget Package Manager to check your settings about Package sources.

Maybe you haven't checked the nuget.org as your package sources. Please check this settings:

In VS, when you click the Restore Nuget Packages option, it will search the packages from available sources . Most of the time the package which we need to restore comes from Nuget Gallery . Just like the JQuery 2.1.1 , so by default we will set nuget.org as our necessary package sources.

I've checked if I uncheck the nuget.org then I got the same issue like yours.

So please:

1.Check the nuget.org as your package sources, if it not exists, just click the green + to create a new sources and set its source as https://api.nuget.org/v3/index.json

2.If the nuget.org exists with checked status, make sure its link is correct In addition:

however it should be looking in a directory named "packages" that actually contains the packages.

If the packages folder you mean is the one locates in Solution directory : In my opinion, Restore Nuget Package doesn't mean searching sources from the packages folder , instead it will search packages from available package sources and install them to packages folder if something is missing in the packages folder .(for packages.config format)