[出典] MySQL Entity Framework Core 例外回避策

System.TypeLoadException:“Method 'get_Info' in type 'Pomelo.EntityFrameworkCore.MySql.Infrastructure.Internal.MySqlOptionsExtension' from assembly 'Pomelo.EntityFrameworkCore.MySql, Version=2.2.6.0, Culture=neutral, PublicKeyToken=null' does not have an implementation.”

System.TypeLoadException:“Method 'get_Info' in type 'MySql.Data.EntityFrameworkCore.Infraestructure.MySQLOptionsExtension' from assembly 'MySql.Data.EntityFrameworkCore, Version=8.0.18.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' does not have an implementation.”

Autofac.Core.DependencyResolutionException: An exception was thrown while activating λ:Microsoft.EntityFrameworkCore.DbContextOptions[] -> λ:Microsoft.EntityFrameworkCore.DbContextOptions -> λ:Microsoft.EntityFrameworkCore.DbContextOptions`1[[itsvse.DomainModels.itsvseDb, itsvse.DomainModels, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].
---> System.TypeLoadException: assembly 'MySql.Data.EntityFrameworkCore.Infraestructure.MySQLOptionsExtension' のメソッド 'get_Info' を 'MySql.Data.EntityFrameworkCore, Version=8.0.18.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' は実装されていません。
   at Microsoft.EntityFrameworkCore.MySQLDbContextOptionsExtensions.UseMySQL
   ITSVSEで。 WebUI.Startup。 <ConfigureServices>b__4_0(DbContextOptionsBuilder opt) in C:\Users\DELL\source\repos\itsvse\itsvse. WebUI\Startup.cs:39行
   at Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.<>c__DisplayClass3_0'2. <AddDbContextPool>b__0(IServiceProvider _, DbContextOptionsBuilder ob)
   at Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.<>c__DisplayClass5_0'2. <AddDbContextPool>b__0(IServiceProvider sp, DbContextOptionsBuilder ob)
   at Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.DbContextOptionsFactory[TContext](IServiceProvider applicationServiceProvider, アクション2の選択肢アクション)
   at Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.<>c__DisplayClass10_0'1. <AddCoreServices>b__0(IServiceProvider p)
   Autofac.Extensions.DependencyInjection.AutofacRegistration.<>c__DisplayClass3_0. <Register>b__0(IComponentContext コンテキスト、IEnumerable'1 パラメータ)
   at Autofac.Core.Activators.Delegate.DelegateActivator.ActivateInstance(IComponentContext context, IEnumerable'1 parameters)
   at Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable'1 parameters, Object& decoratorTarget)
   --- 内部例外スタックトレースの終了---
   at Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable'1 parameters, Object& decoratorTarget)
   at Autofac.Core.Resolving.InstanceLookup.Execute()
   at Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable'1 parameters)
   at Autofac.Core.Resolving.ResolveOperation.ResolveComponent(IComponentRegistration registration, IEnumerable'1 parameters)
   at Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable'1 parameters)
   at Autofac.Core.Lifetime.LifetimeScope.ResolveComponent(IComponentRegistration registration, IEnumerable'1 parameters)
   at Autofac.ResolutionExtensions.TryResolveService(IComponentContext context, Service service, IEnumerable'1 parameters, Object& instance)
   at Autofac.ResolutionExtensions.ResolveService(IComponentContext context, Service service, IEnumerable'1 parameters)
   at Autofac.ResolutionExtensions.Resolve(IComponentContext context, Type serviceType, IEnumerable'1 parameters)
   at Autofac.ResolutionExtensions.Resolve(IComponentContext context, Type serviceType)
   at Autofac.Extensions.DependencyInjection.AutofacServiceProvider.GetRequiredService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetServices[T](IServiceProvider provider)
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.FindContextTypes()
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.FindContextType(String name)
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(String contextType)
   at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigration.<>c__DisplayClass0_0. <.ctor>b__0()
   Microsoft .EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0'1. <Execute>b__0()
   Microsoft で EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
λ:Microsoft.EntityFrameworkCore.DbContextOptions[] -> λ:Microsoft.EntityFrameworkCore.DbContextOptions -> λ: Microsoft.EntityFrameworkCore.DbContextOptions'1[[itsvse. DomainModels.itsvseDb, itsvse. DomainModels, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].