RazorLight: RazorLightException: Cant load metadata... PreserveCompilationContext

1. Go to project’s folder location
2. Write “.csproj” then search
3. Find related csproj file and open it via text editor
4. Find <PropertyGroup> node.
5. Add <PreserveCompilationContext>true</PreserveCompilationContext> inside it.
6. Rebuild the solution.

Where did you add <PreserveCompilationContext>true</PreserveCompilationContext>? Try putting it in “PropertyGroup”.

Like this

  <PropertyGroup>
    ...
    <PreserveCompilationContext>true</PreserveCompilationContext>
    ...
  </PropertyGroup>

I looked at the code in README and put it in ItemGroup, but it was not resolved.

I put it in PropertyGroup and I found it works.

I am trying to do this in an MSTest project for some light integration testing. As instructed, I put the PreserveCompilationContext element (with it set to true) in a property group tag (I used the existing property group tag at the top of the csproj file), however; it still gives me the error. I have run into issues similar to this in the past with unit tests. Is this something that does not work inside a unit test project and if you want to integration test compiling a razor file, you would need to test it in a console app like in the samples?

update: Just a quick sanity check for myself to ensure my code calling into RazorLight is set up properly and works as expected…

I tried pulling my DLL into a console application to confirm that it is working, (it works in the console app), this appears to be an issue with trying to run this in a unit test project.

@jzabroski My intentions was to ensure it wasn’t on an underlying project and added to the project that contains the entry point to the application. I had made that mistake previously.

@AlexTeixeira @b1tburn3r I was able to get it to work by cleaning the project and rebuilding.

So the following worked

dotnet clean
dotnet test