kann keine Migrationen aktivieren

Question

Dieser Fehler wird angezeigt, wenn ich die Migration aktivieren aktiviere! Ich habe das Reverse Engineering der SQLServer und ich möchte einige Changers auf meine Daten tun, ich sehe dies erroe whoch führen mich in die Zeile 10 auf config.cs, die der Konstruktor von Visual Studio (iam mit Visual 2015), sql Connector 6.9 generiert wird .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. 

hier mein configuation.cs

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. 
     } 
    } 
} 

und hier mein Kontext

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

Überprüfung des oben() und nach unten() Methoden in der Migrationsdatei. Ihre Änderungen werden nach dem Befehl update-database gemäß dieser Auf- und Ab-Funktion gesendet. sonst machen Sie Ihre AutomaticMigrationsEnabled = true