英文:
Generate migration for models in .NET 6
问题
我创建了我的模型，并想要运行以下命令来创建我的迁移并通过命令创建表格：
dotnet ef migrations add InitialCreate
我收到以下错误消息：
System.TypeLoadException: 程序集 'MySql.Data.EntityFrameworkCore, Version=8.0.22.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' 中的类型 'MySql.Data.EntityFrameworkCore.Query.Internal.MySQLSqlTranslatingExpressionVisitorFactory' 的 'Create' 方法没有实现。
这些是我的已安装包：
[net6.0]:
顶级包 请求的版本 已解析版本
Microsoft.EntityFrameworkCore 7.0.5 7.0.5
Microsoft.EntityFrameworkCore.Design 7.0.5 7.0.5
MySql.Data.EntityFrameworkCore 8.0.22 8.0.22
Swashbuckle.AspNetCore 6.2.3 6.2.3
我该如何解决这个问题？
英文:
I created my models and I want to run this command to create my migrations and create the tables via command:
dotnet ef migrations add InitialCreate
I get this error:
> System.TypeLoadException: Method 'Create' in type 'MySql.Data.EntityFrameworkCore.Query.Internal.MySQLSqlTranslatingExpressionVisitorFactory' from assembly 'MySql.Data.EntityFrameworkCore, Version=8.0.22.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' does not have an implementation.
>
> at MySql.Data.EntityFrameworkCore.Extensions.MySQLServiceCollectionExtensions.AddEntityFrameworkMySQL(IServiceCollection services)
> at MySql.Data.EntityFrameworkCore.Infrastructure.Internal.MySQLOptionsExtension.ApplyServices(IServiceCollection services)
> at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.ApplyServices(IDbContextOptions options, ServiceCollection services)
> at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.<GetOrAdd>g__BuildServiceProvider|4_1(IDbContextOptions _, ValueTuple2 arguments)2 tuples)
> at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.<>c.<GetOrAdd>b__4_0(IDbContextOptions contextOptions, ValueTuple
at System.Collections.Concurrent.ConcurrentDictionary2.GetOrAdd[TArg](TKey key, Func3 valueFactory, TArg factoryArgument)
at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.GetOrAdd(IDbContextOptions options, Boolean providerRequired)
at Microsoft.EntityFrameworkCore.DbContext..ctor(DbContextOptions options)
at snappfood_new_stack.Models.AppDbContext..ctor(DbContextOptions options) in /home/snappfood/RiderProjects/snappfood_new_stack/snappfood_new_stack/Models/AppDbContext.cs:line 7
at System.RuntimeMethodHandle.InvokeMethod(Object target, Span1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache(ServiceCallSite callSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor2.VisitCallSite(ServiceCallSite callSite, TArgument argument)1 factory)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass2_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetServiceOrCreateInstance(IServiceProvider provider, Type type)
at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.<>c__DisplayClass21_3.<FindContextTypes>b__11()
at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(Func
at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(String contextType)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType, String namespace)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType, String namespace)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigration.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
>
> Method 'Create' in type 'MySql.Data.EntityFrameworkCore.Query.Internal.MySQLSqlTranslatingExpressionVisitorFactory' from assembly 'MySql.Data.EntityFrameworkCore, Version=8.0.22.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' does not have an implementation.
These are my installed packages:
[net6.0]:
Top-level Package Requested Resolved
Microsoft.EntityFrameworkCore 7.0.5 7.0.5
Microsoft.EntityFrameworkCore.Design 7.0.5 7.0.5
MySql.Data.EntityFrameworkCore 8.0.22 8.0.22
Swashbuckle.AspNetCore 6.2.3 6.2.3
How can I fix this?
答案1
得分: 1
尝试使用这个包替代：https://www.nuget.org/packages/MySql.EntityFrameworkCore/
MySql.Data.EntityFrameworkCore 已被弃用，详见此处。
英文:
Try this package instead: https://www.nuget.org/packages/MySql.EntityFrameworkCore/
MySql.Data.EntityFrameworkCore has been depreciated as noted here.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论