はマイグレーションを有効にできません

Question

マイグレーションを有効にすると、そのエラーが表示されます！ iamはSQLServerのリバースエンジニアリングを行いました。データにチェンジャーをしたいのですが、このエラーが表示されるのは、Visual Studioで生成されたコンストラクタであるconfig.cs（Visual 2015を使用したiam）、SQLコネクタ6.9ここでは0.4

Checking if the context targets an existing database... 
System.TypeInitializationException: The type initializer for 'System.Data.Entity.Migrations.DbMigrationsConfiguration`1' threw an exception. ---> System.TypeLoadException: Inheritance security rules violated by type: 'MySql.Data.Entity.MySqlEFConfiguration'. Derived types must either match the security accessibility of the base type or be less accessible. 
    at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs) 
    at System.Reflection.CustomAttribute.CreateCaObject(RuntimeModule module, IRuntimeMethodInfo ctor, IntPtr& blob, IntPtr blobEnd, Int32& namedArgs) 
    at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) 
    at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeType type, RuntimeType caType, Boolean inherit) 
    at System.RuntimeType.GetCustomAttributes(Type attributeType, Boolean inherit) 
    at System.Attribute.GetCustomAttributes(MemberInfo element, Type type, Boolean inherit) 
    at System.Reflection.CustomAttributeExtensions.GetCustomAttributes[T](MemberInfo element, Boolean inherit) 
    at System.Data.Entity.Infrastructure.DependencyResolution.DbConfigurationFinder.TryFindConfigurationType(Assembly assemblyHint, Type contextTypeHint, IEnumerable`1 typesToSearch) 
    at System.Data.Entity.Infrastructure.DependencyResolution.DbConfigurationManager.EnsureLoadedForAssembly(Assembly assemblyHint, Type contextTypeHint) 
    at System.Data.Entity.Infrastructure.DependencyResolution.DbConfigurationManager.EnsureLoadedForContext(Type contextType) 
    at System.Data.Entity.Migrations.DbMigrationsConfiguration`1..cctor() 
    --- End of inner exception stack trace --- 
    at System.Data.Entity.Migrations.DbMigrationsConfiguration`1..ctor() 
    at Data.Migrations.Configuration..ctor() in C:\Users\saif kouti\Desktop\piski[pi_kouti]\piski\Data\Migrations\Configuration.cs:line 10 
--- End of stack trace from previous location where exception was thrown --- 
    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 
    at System.Data.Entity.Migrations.Utilities.MigrationsConfigurationFinder.FindMigrationsConfiguration(Type contextType, String configurationTypeName, Func`2 noType, Func`3 multipleTypes, Func`3 noTypeWithName, Func`3 multipleTypesWithName) 
    at System.Data.Entity.Migrations.Design.ToolingFacade.BaseRunner.FindConfiguration() 
    at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldRunner.RunCore() 
    at System.Data.Entity.Migrations.Design.ToolingFacade.BaseRunner.Run() 
The type initializer for 'System.Data.Entity.Migrations.DbMigrationsConfiguration`1' threw an exception. 

私configuation.csここ

namespace Data.Migrations 
{ 
    using System; 
    using System.Data.Entity; 
    using System.Data.Entity.Migrations; 
    using System.Linq; 

    internal sealed class Configuration : DbMigrationsConfiguration<iskiContext> 
    { 
     public Configuration() 
     { 
      AutomaticMigrationsEnabled = false; 
     } 

     protected override void Seed(Data.iskiContext context) 
     { 
      // This method will be called after migrating to the latest version. 

      // You can use the DbSet<T>.AddOrUpdate() helper extension method 
      // to avoid creating duplicate seed data. 
     } 
    } 
} 

と私のコンテキスト

using System.Data.Entity; 
using Domain.Models.Mapping; 
using Domain.Models; 
namespace Data 
{ 
    [DbConfigurationType(typeof(MySql.Data.Entity.MySqlEFConfiguration))] 

    public partial class iskiContext : DbContext 
    { 
     static iskiContext() 
     { 
      Database.SetInitializer<iskiContext>(null); 
     } 

     public iskiContext() 
      : base("Name=iskiContext") 
     { 
     } 

     public DbSet<accomodation> accomodations { get; set; } 
     public DbSet<company> companies { get; set; } 
     public DbSet<contract> contracts { get; set; } 
     public DbSet<Event> events { get; set; } 
     public DbSet<event_user> event_user { get; set; } 
     public DbSet<organizerrequest> organizerrequests { get; set; } 
     public DbSet<product> products { get; set; } 
     public DbSet<products_user> products_user { get; set; } 
     public DbSet<user> users { get; set; } 
     public DbSet<user_company> user_company { get; set; } 
     public DbSet<winner> winners { get; set; } 

     protected override void OnModelCreating(DbModelBuilder modelBuilder) 
     { 
      modelBuilder.Configurations.Add(new accomodationMap()); 
      modelBuilder.Configurations.Add(new companyMap()); 
      modelBuilder.Configurations.Add(new contractMap()); 
      modelBuilder.Configurations.Add(new eventMap()); 
      modelBuilder.Configurations.Add(new event_userMap()); 
      modelBuilder.Configurations.Add(new organizerrequestMap()); 
      modelBuilder.Configurations.Add(new productMap()); 
      modelBuilder.Configurations.Add(new products_userMap()); 
      modelBuilder.Configurations.Add(new userMap()); 
      modelBuilder.Configurations.Add(new user_companyMap()); 
      modelBuilder.Configurations.Add(new winnerMap()); 
     } 
    } 
} 

Answer 1

チェックマイグレーション・ファイル内のアップ（）およびダウン（）メソッド。この変更に応じて、update-databaseコマンドの後に変更内容が送信されます。 そうでなければAutomaticMigrationsEnabled = true