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C# Setting Up Optimistic Concurrency

Project not compiling

I have downloaded the workspace material. I have set ComicBookLibraryManagerWebApp as the startup project.

However when trying to run the project I get:

https://imgur.com/a/tpDVOXt

Seems to be issues within the downloaded material, as I have not made changes to these areas of code that it is complaining about.

Any ideas?

Thanks

1 Answer

Allan Clark
Allan Clark
10,810 Points

That is an odd error being the file is in the same namespace. Here is what I would do, first open the NuGet package manager (Tools -> NuGet Package Manager -> Manage NuGet Packages for solution...), check if there is a yellow alert at the top with a 'Restore' button, if so click it. Next clean (Build -> Clean Solution) and build (Build -> Build Solution). *Note, not Rebuild just Build

So i followed your steps. However in Nuget Manager, the restore option was not available (assuming I didn't have anything to restore). A clean and build did not help either.

I managed to fix this in the end by addressing the syntax errors by commenting code, once all the syntax errors where cleared, I ran a Build. A pop up box appeared in Visual Studio saying I needed to download .Net Framework 4.7.2

Which I then did, and code is now working! A strange one indeed, thankyou