How to scan for and add EntityTypeConfigurations for Entity Framework. From http://romiller.com/2012/03/26/dynamically-building-a-model-with-code-first/

new_gist_file

public class FooContext : DbContext
{
    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        AddExplicitMappings(modelBuilder);
    }

    private static void AddExplicitMappings(DbModelBuilder modelBuilder)
    {
        var addMethod = typeof (ConfigurationRegistrar)
            .GetMethods()
            .Single(m => m.Name == "Add" && m.GetGenericArguments().Any(a => a.Name == "TEntityType"));
        
        // use this to debug
        //if (System.Diagnostics.Debugger.IsAttached == false)
        //    System.Diagnostics.Debugger.Launch();

        var entityTypeConfigs = FindEntityTypeConfigs();
        entityTypeConfigs.ForEach(entityConfigType =>
        {
            var genericType = entityConfigType.BaseType.GetGenericArguments().Single();
            var entityConfig = Activator.CreateInstance(entityConfigType);
            addMethod.MakeGenericMethod(genericType).Invoke(modelBuilder.Configurations, new[] {entityConfig});
        });
    }

    private static IEnumerable<Type> FindEntityTypeConfigs()
    {
        return Assembly.GetAssembly(typeof(FooContext))
                    .GetTypes()
                    .Where(t => !string.IsNullOrEmpty(t.Namespace) && t.Namespace.Equals(typeof (FooBarMap).Namespace) &&
                        // can't use Type::IsAssignableFrom(). use method in: https://gist.github.com/gabrieljoelc/5706069
                        typeof(EntityTypeConfiguration<>).IsGenericTypeAssignableFrom(t));
    }
}