Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Method not found: IServiceCollection AddHandlebarsScaffolding

See original GitHub issue

Hi! Great tool, I use it daily for updating my model from db changes. It’s the best one I’ve used so far. From some days ago, I’m unable to reverse engineer my db. I get the following exception when I try to do so:

System.MissingMethodException: Method not found: 'Microsoft.Extensions.DependencyInjection.IServiceCollection Microsoft.EntityFrameworkCore.Design.ServiceCollectionExtensions.AddHandlebarsScaffolding(Microsoft.Extensions.DependencyInjection.IServiceCollection, Microsoft.EntityFrameworkCore.Design.ReverseEngineerOptions, System.ValueTuple`2<System.String,System.Action`3<System.IO.TextWriter,System.Object,System.Object[]>>[])'.
   at ReverseEngineer20.EfCoreReverseEngineer.GenerateFiles(ReverseEngineerOptions reverseEngineerOptions)
   at EFCorePowerTools.Handlers.ReverseEngineerHandler.<ReverseEngineerCodeFirst>d__2.MoveNext() in C:\projects\efcorepowertools\src\GUI\EFCorePowerTools\Handlers\ReverseEngineerHandler.cs:line 153

from the looks of it, it is similar to issue #35

Steps to reproduce

I guess the error started happening when I uninstalled another related tool, but to be honest, I really don’t know, so I’m asking for help. This my guess of the steps that would cause it again:

install https://github.com/ErikEJ/SqlCeToolbox
install https://github.com/ErikEJ/EFCorePowerTools
uninstall SqlCeToolbox
right click on project
select ef core power tools -> reverse engineer
click ok in the next 3 modals until the model generation is triggered
The exception is shown on the output window

First I used sqlcetoolbox for a few months. then I had to stop using it due to project requirements, so I went to using the old scaffold-dbcontext. After some months I came across efcorepowertools which made us very happy for some months. and now I’m having this issue. I hope I can go back to using it soon!