asp.net - 不能将 Asp.net core 2.0 与 Entity Framework 6 一起使用

Question

我关注链接 https://docs.microsoft.com/en-us/aspnet/core/data/entity-framework-6去做这个。
但是当我运行prọect时，它发生错误

ConfigurationErrorsException: Configuration system failed to initialize System.Configuration.ClientConfigurationSystem.EnsureInit(string configKey) System.Configuration.ClientConfigurationSystem.PrepareClientConfigSystem(string sectionName) System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(string sectionName) System.Configuration.ConfigurationManager.GetSection(string sectionName) System.Configuration.ConfigurationManager.get_ConnectionStrings() System.Data.Entity.Internal.AppConfig..ctor() System.Data.Entity.Internal.AppConfig..cctor()

原始异常详细信息

TypeInitializationException: The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception. System.Data.Entity.Internal.LazyInternalConnection..ctor(DbContext context, string nameOrConnectionString) System.Data.Entity.DbContext..ctor(string nameOrConnectionString) Repositories.EF6.Context.MyDbContext..ctor() Repositories.EF6.Implements.FakeLinkRepository..ctor() System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCreateInstance(CreateInstanceCallSite createInstanceCallSite, ServiceProvider provider) ....

我已经将 Entity Framework 划分为一个单独的项目，任何人都可以解决它

这是我的代码
在 .net 框架 4.6.1 上运行的 EF6 项目

    [DbConfigurationType(typeof(MySqlEFConfiguration))] 
public class MyDbContext : DbContext
        {

            public MyDbContext():base(GlobalVariables.ConnectionString == null ? "name=defaultConnectionString" : GlobalVariables.ConnectionString)
            {

            }
            public MyDbContext(string connectionString):base(connectionString)
            {

            }
           .......

    }

public class MyDbConfiguration : MySqlEFConfiguration
    {
        public MyDbConfiguration()
        {
            SetProviderServices("MySql.Data.MySqlClient", new MySqlProviderServices());
            SetDefaultConnectionFactory(new MySqlConnectionFactory());
        }
    }

我的仓库

public class MyRepository : Repository
    {
        MyDbContext _context;
        public MyRepository ()
        {
            _context = new MyDbContext();
        }
     .....
}

在asp.net核心2.0中
GlobalVariables.ConnectionString 获取 appSetting.json 上 connectionString 的值，MyDbContext 由 DI create MyRepository 创建

标准类 2.0 上的静态类 GlobalVariables

当我再次运行我的项目 asp.net core 2.0 时，这是错误

ConfigurationErrorsException:无法识别的配置部分 system.data。

文件配置是:

<configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
    <add name="defaultConnectionString" providerName="MySql.Data.MySqlClient" connectionString="server=localhost;user id=root;password=admin;database=té;persistsecurityinfo=True" />
  </connectionStrings>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
      <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.9.10.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"></provider>
    </providers>
  </entityFramework>
  <system.data>
    <DbProviderFactories>
      <remove invariant="MySql.Data.MySqlClient" />
      <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.9.10.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
    </DbProviderFactories>
  </system.data>

更新，我发现问题了，可能.net core 2.0不支持system.Data.Common。我在 nuget 上找到了，但只在 .net 标准 1.2 中找到了这个库支持。
我认为不能将 Entity Framework 6 与 asp.net core 2.0 一起使用，等待下一次更新。

Answer 1

You can't put an EF6 context in an ASP.NET Core project because .NET Core projects don't support all of the functionality that EF6 commands such as Enable-Migrations require.

您是否将 EF6 放在单独的 .net 4.6 项目中？
或尝试使用 EF Core 代替？ https://docs.microsoft.com/en-us/ef/core/