Unable to restore source code

[arshad506]

I am getting below error while restoring the aspnetcore source code.

C:\src2\aspnetcore\src\Mvc>dotnet restore --interactive
v14.15.0
C:\Program Files\dotnet\sdk\3.1.103\NuGet.targets(123,5): error : Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/_packaging/darc-int-dotnet-extensions-877455ff/nuget/v3/index.json. [C:\src2\aspnetcore\src\Mvc\Mvc.sln]
C:\Program Files\dotnet\sdk\3.1.103\NuGet.targets(123,5): error : Response status code does not indicate success: 401 (Unauthorized). [C:\src2\aspnetcore\src\Mvc\Mvc.sln]

Need help here.

[Pilchie]

Are you building a particular tag? If so, edit the NuGet.config file to remove the darc-int feeds. They are internal only feeds used for building security patches.

[arshad506]

Yes I am building version 3.1.5. After removing darc-int feeds, I am able to build now. But when I build the same solution using Visual Studio, its failing. Getting below error.

Severity Code Description Project File Line Suppression State
Error CS0006 Metadata file 'C:\S6\aspnetcore\src\Components\Forms\src\bin\Debug\netstandard2.0\Microsoft.AspNetCore.Components.Forms.dll' could not be found Microsoft.AspNetCore.Components.Web (netstandard2.0) C:\S6\aspnetcore\src\Components\Web\src\CSC 1 Active

Can you please suggest here?

[Pilchie]

That implies that the .sln you opened in missing one of it's dependencies. Our normal builds don't use the .sln files, so they are sometimes incomplete. You may have to either build on the command line first, or add the missing dependencies to the .sln file.

[arshad506]

The solution was build using "dotnet build" command. And now its building without any errors. Now I want to explore the source code. "app.UseStaticFiles();". When I right click on UseStaticFiles() and wanted to go to implementation, it says. "The symbol has no Implementation". Looks like the Mvc source code is using the compiled version of "Middleware". How to navigate to source code of middleware from MVC project.

Can you pls help here?.

[Pilchie]

Yes, unfortunately that's the way it works in the 3.1 branch. The .sln doesn't necessarily include all of the projects in the repo. In .NET 5, we switched to a single .sln file and solution filter files for individual subsets which might help here. In the mean time, you could add the dependent project to the solution, either by using Right Click -> Add -> Existing Project, or dotnet sln add.

Finally, you might consider using the online source index at https://source.dot.net/ to browse sources that aren't in your sln if you aren't planning on changing them.