Question 299308 in Mysql Question posted in
The official MySQL documentation can be found here.

Mysql – EF Core 8 Unable to create a 'DbContext' of type ''

Trying to update a project to .NET 8.0. I updated all the related packages to match the 8.0 version.

But it throws System.MissingMethodException: Method not found: 'Void CoreTypeMappingParameters..ctor at runtime.

I tried to check the migrations in cli but most of the commands give me this:

Unable to create a 'DbContext' of type ''. The exception 'Method not found: ...

dotnet ef dbcontext list does recognize my context but it always throws the error.

I am using mysql. The packages related and their versions are :

  • MySql.EntityFrameworkCore 8.0.0-preview
  • MySql.Data 8.2.0
  • Microsoft.EntityFrameworkCore 8.0.0
  • Microsoft.EntityFrameworkCore.Relational 8.0.0
  • Microsoft.EntityFrameworkCore.Design 8.0.0
  • Microsoft.EntityFrameworkCore.Analyzers 8.0.0

My project works well on the 7.0 version. I did not modify anything except updating the packages in this new 8.0 branch.

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    There might have been something wrong with MySql.EntityFrameworkCore 8.0.0-preview

    For now the only way to solve this should be switching to Pomelo.EntityFrameworkCore.MySql.

    If your code works fine on the older version of .NET, the only line you need to change is where you call UseMySql.


  2. 0

    For .Net 8 Please use Pomelo.EntityFrameworkCore.Mysql version 8 and above.

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search