Not compatible with Microsoft.AspNetCore.Razor 2.0.0

[0x53A]

Microsoft.AspNetCore.Razor 2.0.0 only contains a netstandard2.0 dll with a few types:

This obviously causes RazorEngine to crash.

I would suggest to change the reference to 1.0 <= x < 2.0 and/or inquire with the asp.net team if this was on purpose and where the types moved.

[matthid]

/cc @conniey

[nvivo]

While this is not resolved, I'm leaving this workaround if someone needs it.

I was able to keep RazorEngine working on my app after upgrading to aspnet core 2.0 by using ILMerge-GUI + ILRepack to merge and internalize it's dependencies:

Just remove the nuget reference and add the reference to the new file instead. Not perfect, but prevented me from downgrading a dozen projects due to a single dependency.

[hermanho]

It seems that a breaking changes had made.
aspnet/Announcements#227
aspnet/Razor#1084

Would it work when you include Microsoft.AspNetCore.Razor, Microsoft.AspNetCore.Razor.Runtime and
Microsoft.AspNetCore.Razor.Language for netstandard2.0 ?

[mscrivo]

I've tried adding those 2 extra packages, but still getting this error:

Exception="System.TypeLoadException" ExceptionDetail="System.TypeLoadException: Could not load type 'Microsoft.AspNetCore.Razor.Parser.ParserBase' from assembly 'Microsoft.AspNetCore.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'

with RazorEngine 4.5.1-alpha001

[GetTaxSolutions]

We also have some problem. Will it be fixed soon?

[daviatorstorm]

[conniey]

@daviatorstorm Hi, the reason you are getting that issue is because an ASP.NET Core application (netcoreapp2.0) does not support System.Configuration. If you used a full Framework ASP.NET application, it would resolve correctly.
The package currently available on NuGet.org does not run on .NET Core yet.

[conniey]

@0x53A Can you give me a repro of the issue you're having? I am able to get my package, built from #488 to run and work on my ASP.NET Full .NET Framework application.

[0x53A]

@conniey I don't have a standalone repo, but will describe my use case a bit more:

• F# fsx script that uses RazorEngine to generate files from templates
• I added a reference to RazorEngine through paket
• Microsoft.AspNetCore.Razor is pulled in as an implicit dependency, no other Asp.net projects are used in this context.

Now the issue is that between 1.x and 2.x, most classes were removed from Microsoft.AspNet.Razor.dll, as you can see in my first screenshot.

This causes a typeload exception at runtime.

I fixed the issue by pinning Microsoft.AspNetCore.Razor < 2.0 in my paket.dependencies.

[conniey]

@0x53A Thanks for explaining the issue! I asked the ASP.NET team and when we move to .NET Core, I'll have to add those extra dependencies they mention here: aspnet/Razor#1855 (comment)

Your current workaround is what I applied to #488 for now.

[nvivo]

@matthid Any chance we can get a new release with this support?

[conniey]

@nvivo hey, I had looked into this when it was first mentioned. However, they've upgraded, deprecated, and made internal many classes that RazorEngine uses. So it'll be a huge undertaking. I can look into it more over the weekend but no promises.

[nvivo]

@conniey Right. I thought #488 was solving this issue, as it was closed by it. So, it's being abandoned for now?

[conniey]

@nvivo #488 explicitly says we should use a version less than 2.0.0 for RazorEngine. Adding support for Microsoft.AspNetCore.Razor 2.0.0 would be another issue

[nvivo]

Sorry, I didn't read all the PR, just saw it closed this one. My fault.