public class MyRegistry : Registry 
{
    public MyRegistry()
    {
        // DataContext
        ForRequestedType<DataContext>()
            .CacheBy(InstanceScope.HttpContext)
            .TheDefault.Is.ConstructedBy(() => new DataContext(DecriptConectionString()));
 
        // Unit of work
        ForRequestedType<IUnitOfWork>()
            .CacheBy(InstanceScope.HttpContext)
            .TheDefault.Is.OfConcreteType<UnitOfWork>();
 
        // Repositories
        ForRequestedType<IContactInformationRepository>()
            .CacheBy(InstanceScope.HttpContext)
            .TheDefault.Is.OfConcreteType<ContactInformationRepository>();
 
        // Services
        ForRequestedType<IHelpCenterService>()
            .CacheBy(InstanceScope.HttpContext)
            .TheDefault.Is.OfConcreteType<HelpCenterService>()
            .WithCtorArg("mailTo").EqualToAppSetting("helpCenter.mailTo");
 
    }
}