Add migration and make update at runtime EntityFramework

I'm developing an application and the need to add migration and run the update at runtime.

I already have all the part that loads the modules:

public class ClientContext : DbContext
{

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
        LoadModulos();
        LoadMaps(modelBuilder);
    }

    public static void LoadMaps(DbModelBuilder modelBuilder)
    {
        IEnumerable<Type[]> assemblies = AppDomain.CurrentDomain
            .GetAssemblies()
            .Where(a => a.FullName.StartsWith("NCode.")
                && a.FullName.Contains(".EF")
                && !a.FullName.Contains("NCode.EF")
                && a.GetTypes().Any(t => t.Namespace != null && t.Namespace.EndsWith(".Map")))
            .Select(a => a.GetTypes().Where(t => t.Namespace != null && t.Namespace.EndsWith(".Map")).ToArray());

        foreach (var types in assemblies)
        {
            foreach (var t in types)
            {

                // Verifica se classe pai do tipo (t) é a EntityTypeConfiguration<>
                var entityTypeConfiguration = typeof(EntityTypeConfiguration<>);
                var baseType = t.BaseType;
                if (!baseType.IsGenericType 
                    && baseType.IsGenericTypeDefinition
                    && !(baseType.GetGenericTypeDefinition() == entityTypeConfiguration)) 
                {
                    continue;
                }


                // Tipo da entidade
                Type entityType = baseType.GetGenericArguments()[0];

                // Método Add da Configuration
                MethodInfo method = typeof(ConfigurationRegistrar).GetMethods()
                            .FirstOrDefault(x => x.Name == "Add" && x.GetGenericArguments()[0].ToString().Equals("TEntityType"));

                // Trasforma em um generic method passando o Tipo da Entidade
                MethodInfo genericMethod = method.MakeGenericMethod(new Type[] { entityType });

                // Cria a instancia do Map
                object map = (object)Activator.CreateInstance(t);

                try
                {
                    // Invoca o generic method passando a configurations a instancia do map 
                    genericMethod.Invoke(modelBuilder.Configurations, new object[] { map });
                }
                catch (Exception ex)
                {
                }

            }
        }
    }

    private void LoadModulos()
    {
        NCodeSection configSection = (NCodeSection)
           System.Configuration.ConfigurationManager.GetSection("NCode");

        foreach (NCodeModuloElement customAssembly in configSection.Modulos)
        {
            try { Assembly.Load("NCode." + customAssembly.Nome + ".Model"); }
            catch (Exception ex) { }
            try { Assembly.Load("NCode." + customAssembly.Nome + ".EF"); }
            catch (Exception ex) { }
        }
    }

    public ClientContext(string nameOrConnectionString)
        : base(nameOrConnectionString)
    {

    }

Does anyone have any idea how to do it?