dotnet core 3.0.0-preview8

2019-09-06 17:01:15

用Scaffold命令生成数据库实体类，新建个asp.net core 2.2 webapi项目，在.net core 2.2下是好的，能生成实体类。再新建asp.net core 3.0 webapi项目，关联的驱动和组件都升级到3.0 预览版，同样的Scaffold命令就报错了，不知道问题再哪里？目前就现在2.2里生成实体类，在复制到3.0的项目中用。

PM> Scaffold-DbContext -Force "Data Source=xx;Database=cloud;User Id=xx;Password=xx;CharSet=utf8;port=xx" MySql.Data.EntityFrameworkCore -OutputDir Models -Context MySqlContext

System.TypeLoadException: Method 'Create' in type 'MySql.Data.EntityFrameworkCore.Scaffolding.Internal.MySQLDatabaseModelFactory' from assembly 'MySql.Data.EntityFrameworkCore, Version=8.0.17.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' does not have an implementation.

at MySql.Data.EntityFrameworkCore.Design.Internal.MySQLDesignTimeServices.ConfigureDesignTimeServices(IServiceCollection serviceCollection)

at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.ConfigureDesignTimeServices(Type designTimeServicesType, IServiceCollection services)

at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.ConfigureProviderServices(String provider, IServiceCollection services, Boolean throwOnError)

at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.Build(String provider)

at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContext(String provider, String connectionString, String outputDir, String outputContextDir, String dbContextClassName, IEnumerable1 schemas, IEnumerable1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)

at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContextImpl(String provider, String connectionString, String outputDir, String outputDbContextDir, String dbContextClassName, IEnumerable1 schemaFilters, IEnumerable1 tableFilters, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)

at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext. c__DisplayClass0_0.<.ctor>b__0()

at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase. c__DisplayClass3_0`1.b__0()

at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)

Method 'Create' in type 'MySql.Data.EntityFrameworkCore.Scaffolding.Internal.MySQLDatabaseModelFactory' from assembly 'MySql.Data.EntityFrameworkCore, Version=8.0.17.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' does not have an implementation.

PM> Scaffold-DbContext -Force "Data Source=(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = xx)(PORT=xx))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME =xx)));User Id=xx;Password=xx;" Oracle.EntityFrameworkCore -OutputDir DataModels -Context MyDbContext -Schemas xx

System.TypeLoadException: Method 'Create' in type 'Oracle.EntityFrameworkCore.Scaffolding.Internal.OracleDatabaseModelFactory' from assembly 'Oracle.EntityFrameworkCore, Version=2.0.19.1, Culture=neutral, PublicKeyToken=89b483f429c47342' does not have an implementation.

at Oracle.EntityFrameworkCore.Design.Internal.OracleDesignTimeServices.ConfigureDesignTimeServices(IServiceCollection serviceCollection)

at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.ConfigureDesignTimeServices(Type designTimeServicesType, IServiceCollection services)

at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.ConfigureProviderServices(String provider, IServiceCollection services, Boolean throwOnError)

at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.Build(String provider)

at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext. c__DisplayClass0_0.<.ctor>b__0()

at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase. c__DisplayClass3_0`1.b__0()

at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)

Method 'Create' in type 'Oracle.EntityFrameworkCore.Scaffolding.Internal.OracleDatabaseModelFactory' from assembly 'Oracle.EntityFrameworkCore, Version=2.0.19.1, Culture=neutral, PublicKeyToken=89b483f429c47342' does not have an implementation.

Steps to reproduce

Include a complete code listing (or project/solution) that we can run to reproduce the issue.

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--mysql (replace sensitive information to xx)

Scaffold-DbContext -Force "Data Source=xx;Database=cloud;User Id=xx;Password=xx;CharSet=utf8;port=xx" MySql.Data.EntityFrameworkCore -OutputDir Models -Context MySqlContext

--oracle (replace sensitive information to xx)

Scaffold-DbContext -Force "Data Source=(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = xx)(PORT=xx))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME =xx)));User Id=xx;Password=xx;" Oracle.EntityFrameworkCore -OutputDir DataModels -Context MyDbContext -Schemas xx

Further technical details

$ dotnet --info

.NET Core SDK (global.json):

Version: 3.0.100-preview8-013656

Commit: 8bf06ffc8d

OS Name: Windows

OS Version: 10.0.17134

OS Platform: Windows

RID: win10-x64

Base Path: C:\Program Files\dotnet\sdk\3.0.100-preview8-013656

Host (useful for support):

Version: 3.0.0-preview8-28405-07