How to use internal dbcontext?

Question

How to use internal dbcontext? I wonder how I can hide the DbContext object so that other libraries of my project do not have direct access.

I placed my DbContext as internal in the library and, apparently, should work, however, when the application starts, the following message appears:

The target context "Context" is not constructive. Add a default constructor or specify an IDbContextFactory implementation

Can someone help me?

My data layer implementation:

[DbConfigurationType(typeof (ConfigContext))]
internal class Context : DbContext
{
    internal Context()
        : base(ConfigDataBase.GetSqlServerString(ConfigZnfce.Instance.SqlServerInstance))
    {
    }
    //More code below
}


public class ConfigContext: DbConfiguration
{
    public ConfigContext()
    {
        SetDefaultConnectionFactory(new System.Data.Entity.Infrastructure.LocalDbConnectionFactory("v11.0"));
        SetProviderServices("System.Data.SqlClient", System.Data.Entity.SqlServer.SqlProviderServices.Instance);
        SetDatabaseInitializer(new CreateDatabaseIfNotExists<Context>());
        SetDatabaseInitializer(new MigrateDatabaseToLatestVersion<Context, Configuration>());            
    }
}

I want all other libraries to have to go through a unit of work and storage in order to perform any database operation

[SOLVED]

I left both the internal context and the constructor context and public, as in the code below:

[DbConfigurationType(typeof (ConfigContext))]
internal class Context : DbContext
{
    public Context()
        : base(ConfigDataBase.GetSqlServerString(ConfigZnfce.Instance.SqlServerInstance))
    {
    }
    //More code below
}

Answer 1

virtual DBSet < > DbContext ( .

TT, , DbSet (EntitySet entitySet). , public {0} .

public string DbSet(EntitySet entitySet) {
    return string.Format(
        CultureInfo.InvariantCulture,
        "public virtual DbSet<{0}> {1} {{ get; set; }}",
        _typeMapper.GetTypeName(entitySet.ElementType),
        _code.Escape(entitySet));
}

DbContext, , EF .