Could not load file or assembly

[lsvMoretti]

Please see this issue, I am not sure on how to get this resolved. I am using the latest version of .net core 3.0 SDK (RC1), Pomelo for EF. When recently updated, my project has stopped working. No code has been changed.

https://github.com/dotnet/coreclr/issues/26791

[lauxjpn]

Pomelo's provider does not yet support EF Core 3.0.
The upgade is being merged in a couple of hours though and a prerelease package will be out soon.

[lsvMoretti]

Pomelo's provider does not yet support EF Core 3.0.
The upgade is being merged in a couple of hours though and a prerelease package will be out soon.

Brilliant, thanks. I'll await for the update.

[lsvMoretti]

System.TypeLoadException: Method 'get_Info' in type 'Pomelo.EntityFrameworkCore.MySql.Infrastructure.Internal.MySqlOptionsExtension' from assembly 'Pomelo.EntityFrameworkCore.MySql, Version=2.2.0.0, Culture=neutral, PublicKeyToken=null' does not have an implementation.

This is using branch 3.0?

[lauxjpn]

Pomelo.EntityFrameworkCore.MySql, Version=2.2.0.0

This suggests that you are using the last official release, which is this one:
https://github.com/PomeloFoundation/Pomelo.EntityFrameworkCore.MySql/releases/tag/2.2.0

It is compatible with EF Core 2.2 but not with EF Core 3.0.

For EF Core 3.0 compatibility, you could clone and build from the 3.0.0-wip branch if you like, or wait a little bit for an official preview on nuget, which will be out soon.

Also, it should be possible to use .NET Core 3.0 with EF Core 2.2 and Pomelo's MySQL 2.2.0.

[lsvMoretti]

Yeah for some reason I have cloned the branch and built but it's throwing another error up. I have also tried using SQL with Entity Framework and I get the above error still.

[lauxjpn]

You can provide us with a test repo, if you like. I will take a look at it.

[lsvMoretti]

I have added you into the repo @lauxjpn and created an issue with some links

https://github.com/lsvMoretti/Los-Santos-V/issues/12

[lauxjpn]

This issue is unrelated to us. I will close it therefore.

[lsvMoretti]

@lauxjpn I seem to be getting this error now

ystem.TypeLoadException: Method 'get_Info' in type 'Pomelo.EntityFrameworkCore.MySql.Infrastructure.Internal.MySqlOptionsExtension' from assembly 'Pomelo.EntityFrameworkCore.MySql, Version=2.2.0.0, Culture=neutral, PublicKeyToken=null' does not have an implementation.
   at Microsoft.EntityFrameworkCore.MySqlDbContextOptionsExtensions.UseMySql
   at Server.Context.OnConfiguring(DbContextOptionsBuilder optionsBuilder) in F:\Andrew\Documents\Los Santos V\Development\Github\Los-Santos-V\Server\Context.cs:line 50
   at Microsoft.EntityFrameworkCore.DbContext.get_InternalServiceProvider()
   at Microsoft.EntityFrameworkCore.DbContext.get_DbContextDependencies()
   at Microsoft.EntityFrameworkCore.DbContext.get_Model()
   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityType()
   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityQueryable()
   at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.System.Linq.IQueryable.get_Provider()
   at System.Linq.Queryable.Where[TSource](IQueryable`1 source, Expression`1 predicate)
   at Server.Vehicle.LoadVehicle.ResetAllVehiclesSpawnStatus() in F:\Andrew\Documents\Los Santos V\Development\Github\Los-Santos-V\Server\Vehicle\LoadVehicle.cs:line 21

[lsvMoretti]

This is also using the 3.0.0 wip branch as well as stable 2.2.0

[lauxjpn]

The message seems to indicate, that you are using .Net Core 3.0 with EF Core 3.0 and Pomelo.MySql 2.2.0, which is not supported.
See #797 (comment)

However, the following is a working scenario with .Net Core 3.0 (established in #797 (comment)):

It should be possible to use .NET Core 3.0 together with EF Core 2.2 and Pomelo's MySQL 2.2.0.

You could also just use the dependencies from the project file content I first posted to the issue thread we were working in. It uses the exact setup talked about in #797 (comment) .

[lauxjpn]

If the problem persists, post us your project file content or all <PackageReference /> tags of your project file.