Enity Framework With MySQL - config file could not be loaded - mysql

Question

I am trying to change SQL Database type from MSSQL to MySQL inside .NET web app.
I followed this:
https://dev.mysql.com/doc/connector-net/en/connector-net-entityframework60.html
and updating Web.config files.
<configuration>
<configSections>
<section name="AdWordsApi" type="System.Configuration.DictionarySectionHandler" />
<!-- 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>
...
</configuration>
...
<entityFramework codeConfigurationType="MySql.Data.Entity.MySqlEFConfiguration, MySql.Data.EntityFramework">
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<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.EntityFramework, Version=8.0.27.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</providers>
</entityFramework>
<connectionStrings>
<add name="DefaultConnection" providerName="MySql.Data.MySqlClient" connectionString="Server=XYZ;Database=XYZ;Uid=XYZ;Password=XYZ;" />
</connectionStrings>
When trying to Enable-Migrations I am getting:
Checking if the context targets an existing database...
System.InvalidOperationException: The DbConfiguration type 'MySql.Data.Entity.MySqlEFConfiguration, MySql.Data.EntityFramework' specified in the application config file could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See http://go.microsoft.com/fwlink/?LinkId=260883 for more information. ---> System.TypeLoadException: Nie można załadować typu 'MySql.Data.Entity.MySqlEFConfiguration' z zestawu 'MySql.Data.EntityFramework'.
w System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMarkHandle stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName, ObjectHandleOnStack type)
w System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName)
w System.Type.GetType(String typeName, Boolean throwOnError)
w System.Data.Entity.Infrastructure.DependencyResolution.DbConfigurationLoader.TryLoadFromConfig(AppConfig config)
--- Koniec śladu stosu wyjątków wewnętrznych ---
w System.Data.Entity.Infrastructure.DependencyResolution.DbConfigurationLoader.TryLoadFromConfig(AppConfig config)
w System.Data.Entity.Infrastructure.DependencyResolution.DbConfigurationManager.EnsureLoadedForAssembly(Assembly assemblyHint, Type contextTypeHint)
w System.Data.Entity.Infrastructure.Design.Executor.ScaffoldInitialCreateInternal(DbConnectionInfo connectionInfo, String contextTypeName, String contextAssemblyName, String migrationsNamespace, Boolean auto, String migrationsDir)
w System.Data.Entity.Infrastructure.Design.Executor.ScaffoldInitialCreate.<>c__DisplayClass0_0.<.ctor>b__0()
w System.Data.Entity.Infrastructure.Design.Executor.OperationBase.<>c__DisplayClass4_0`1.b__0()
w System.Data.Entity.Infrastructure.Design.Executor.OperationBase.Execute(Action action)
The DbConfiguration type 'MySql.Data.Entity.MySqlEFConfiguration, MySql.Data.EntityFramework' specified in the application config file could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See http://go.microsoft.com/fwlink/?LinkId=260883 for more information.```
I din't update any class, only configuration files so far. My context class looks like this:
namespace Repository.Models
{
public class AppContext : IdentityDbContext, IAppContext
{
public AppContext()
: base("DefaultConnection")
{
}
public static AppContext Create()
{
return new AppContext();
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
...
}
}
I tried modifying above class into with no luck:
[DbConfigurationType(typeof(MySqlEFConfiguration))]
public class AppContext : DbContext, IAppContext
{
public DbSet<ApplicationUser> ApplicationUsers { get; set; }
...
public AppContext()
: base()
{
}
// Constructor to use on a DbConnection that is already opened
public AppContext(DbConnection existingConnection, bool contextOwnsConnection)
: base(existingConnection, contextOwnsConnection)
{
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
//modelBuilder.Entity<Car>().MapToStoredProcedures();
}
}

Answer 1

1- You Need to Install The NuGet Package MySql.Data.Entity
2- Update the Configuration Type of DbContextFile:
[DbConfigurationType(typeof(MySqlEfConfiguration))]
public class AppDbContext : DbContext{.....}
3- Change the Connection String provider name to: "MySql.Data.MySqlClient"
providerName="MySql.Data.MySqlClient"
4- Test With Migrations
As I See, the problem is that you need to modify the DbContext Class