ADO.NET Entities, System.TypeInitializationException

There was a problem with running an application written in C # (WPF) with connection to the MySql database using ADO.NET Entities. The error is as follows:

System.TypeInitializationException не обработано пользовательским кодом HResult=-2146233036 Message=Инициализатор типа "System.Data.Entity.Internal.AppConfig" выдал исключение. Source=EntityFramework TypeName=System.Data.Entity.Internal.AppConfig StackTrace: в System.Data.Entity.Internal.AppConfig.get_DefaultInstance() в System.Data.Entity.Internal.LazyInternalConnection..ctor(DbContext context, String nameOrConnectionString) в System.Data.Entity.DbContext..ctor(String nameOrConnectionString) в AccessToClientsDB.clientdbEntities..ctor() в c:\Users\Andrey\Desktop\...\ClientService\Client\AccessToClientsDB\clientdb.Context.cs:строка 18 в AccessToClientsDB.AccessToClientsDB..ctor() в c:\Users\Andrey\Desktop\...\ClientService\Client\AccessToClientsDB\AccessToClientsDB.cs:строка 13 в GUI.MainWindow..ctor() в c:\Users\Andrey\Desktop\...\ClientService\Client\GUI\MainWindow.xaml.cs:строка 26 InnerException: System.Configuration.ConfigurationErrorsException HResult=-2146232062 Message=Система конфигурации не прошла инициализацию Source=System.Configuration BareMessage=Система конфигурации не прошла инициализацию Line=0 StackTrace: в System.Configuration.ClientConfigurationSystem.OnConfigRemoved(Object sender, InternalConfigEventArgs e) в System.Configuration.Internal.InternalConfigRoot.OnConfigRemoved(InternalConfigEventArgs e) в System.Configuration.Internal.InternalConfigRoot.RemoveConfigImpl(String configPath, BaseConfigurationRecord configRecord) в System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject) в System.Configuration.BaseConfigurationRecord.GetSection(String configKey) в System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String sectionName) в System.Configuration.ConfigurationManager.GetSection(String sectionName) в System.Data.Entity.Internal.AppConfig..ctor() в System.Data.Entity.Internal.AppConfig..cctor() InnerException: System.Configuration.ConfigurationErrorsException HResult=-2146232062 Message= Неизвестный раздел конфигурации userSettings. (C:\Users\Andrey\AppData\Local\GUI\GUI.vshost.exe_Url_ev1ciwvrswduwtnpzk5phoigckrk3o4m\1.0.0.0\user.config line 3) Source=System.Configuration BareMessage= Неизвестный раздел конфигурации userSettings. Filename=C:\Users\Andrey\AppData\Local\GUI\GUI.vshost.exe_Url_ev1ciwvrswduwtnpzk5phoigckrk3o4m\1.0.0.0\user.config Line=3 StackTrace: в System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal) в System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors) в System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors() в System.Configuration.ClientConfigurationSystem.OnConfigRemoved(Object sender, InternalConfigEventArgs e) InnerException: 

This error occurs in a class written by the medium; I suspect that this class was written in the process of creating a model. Here is the code:

 //------------------------------------------------------------------------------ // <auto-generated> // Этот код создан по шаблону. // // Изменения, вносимые в этот файл вручную, могут привести к непредвиденной работе приложения. // Изменения, вносимые в этот файл вручную, будут перезаписаны при повторном создании кода. // </auto-generated> //------------------------------------------------------------------------------ namespace AccessToClientsDB { using System; using System.Data.Entity; using System.Data.Entity.Infrastructure; public partial class clientdbEntities : DbContext { public clientdbEntities() : base("name=clientdbEntities") { } protected override void OnModelCreating(DbModelBuilder modelBuilder) { throw new UnintentionalCodeFirstException(); } public virtual DbSet<company> company { get; set; } public virtual DbSet<department> department { get; set; } public virtual DbSet<record> record { get; set; } public virtual DbSet<telephone> telephone { get; set; } } } 

Yes, I added the model to the class with the namespace AccessToClientsDB The exception is knocked out at this stage:

 public clientdbEntities() : base("name=clientdbEntities") 

App.config

 <?xml version="1.0" encoding="utf-8"?> <configuration> <configSections> <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --> </configSections> <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=6.9.8.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" /> </DbProviderFactories> </system.data> <!--<entityFramework> <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" /> <providers> <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" /> </providers> </entityFramework>--> <entityFramework> <defaultConnectionFactory type="MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6" /> <providers> <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6" /> </providers> </entityFramework> <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="MySql.Data" publicKeyToken="c5687fc88969c44d" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-6.9.8.0" newVersion="6.9.8.0" /> </dependentAssembly> </assemblyBinding> </runtime> <connectionStrings><add name="clientdbEntities" connectionString="metadata=res://*/clientdb.csdl|res://*/clientdb.ssdl|res://*/clientdb.msl;provider=MySql.Data.MySqlClient;provider connection string=&quot;server=localhost;user id=Andrew;password=150468;persistsecurityinfo=True;database=clientdb&quot;" providerName="System.Data.EntityClient" /></connectionStrings></configuration> 

packages.config

 <?xml version="1.0" encoding="utf-8"?> <packages> <package id="EntityFramework" version="6.1.3" targetFramework="net45" /> <package id="EntityFramework.ru" version="6.1.1" targetFramework="net45" /> <package id="MySql.Data" version="6.9.8" targetFramework="net45" /> <package id="MySql.Data.Entities" version="6.8.3.0" targetFramework="net45" /> <package id="MySql.Web" version="6.9.8" targetFramework="net45" /> </packages> 

The only point that, judging by all the forums, could be embarrassing is the different versions of EntityFramework, EntityFramework.ru in the references and in the package file. But I tried to change in the file with the same ones in the references and this did not help to correct the error. A little more confusing is that there are only EntitIES in the packages, but there is no EntitY, while the reference has Entity.EF6, and the EntitIES are not at all. I do not know what it depends on, but I added packages from NuGet, following the answer to this post: https://stackoverflow.com/questions/22031269/enable-entity-framework-6-for-mysql-c-in-winforms- Of-microsoft-visual-studio Although, if memory is not deceiving, I could add once, except for the EntitY package, also EntitIES.