Question

我正在尝试使用C＃表单应用程序。 İ想要创建mysql数据库在我的应用程序中使用EntityFramework Codefirst。

我的DbContext.cs文件

using MySql.Data.Entity;
using System.Data.Entity;

namespace try.DatabaseContext
{
    [DbConfigurationType(typeof(MySqlEFConfiguration))]
    class DatabaseContext :DbContext

    {
        public DatabaseContext():base("MySQL")
        {

        }
        public DbSet<User> UserList { get; set; }
        public DbSet<Roles> RoleList { get; set; }


    }
}

我的AppConfig.cs文件

<?xml version="1.0" encoding="utf-8"?>
<configuration>

  <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="MySQL" connectionString="Server=localhost;Port=3306;Database=DB;Uid=root;Pwd=mypass;sslmode=None;" providerName="MySql.Data.MySqlClient" />
  </connectionStrings>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
  </startup>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6" />
      <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=6.9.9, Culture=neutral, PublicKeyToken=c5687fc88969c44d"></provider></providers>
  </entityFramework>

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="MySql.Data" publicKeyToken="c5687fc88969c44d" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-6.9.12.0" newVersion="6.9.12.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
<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=6.9.12.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
    </DbProviderFactories>
  </system.data></configuration>

我的packages.config文件

<packages>
  <package id="EntityFramework" version="6.2.0" targetFramework="net461" />
  <package id="Google.Protobuf" version="3.5.1" targetFramework="net461" />
  <package id="MySql.Data" version="6.9.12" targetFramework="net461" />
  <package id="MySql.Data.Entities" version="6.8.3.0" targetFramework="net461" />
  <package id="MySql.Data.Entity" version="6.9.10" targetFramework="net461" />
</packages>

当我将此命令写入nugget-console

时

Enable-Migrations

我得到了这个例外

'System.Data.Entity.Migrations.DbMigrationsConfiguration`1'的类型初始值设定项引发异常。

连接.net与mysql迁移问题

0 个答案: