MVC Event Sourcing Example with CRUD

CreateCustomer Controller

[HttpPost]
public ActionResult CreateCustomer(Customer customer)
{
    // Check business logic here (but no persistance)
    if (DB.Customers.Values.ToList().Any(c => c.Name == customer.Name))
    {
        ModelState.AddModelError(string.Empty, "Duplicate Name Detected");
    }

    if (!ModelState.IsValid)
    {
        return View(customer);
    }


    // assuming all is good create and save event message
    var createdEventMessdage = new CustomerCreated { Id = Guid.NewGuid(), Name = customer.Name };
    DB.SaveEvent(createdEventMessdage);

    // Send it off to be routed arround the system
    _router.Handle(createdEventMessdage); // This could be handling multiple tasks if needed - all de-coupled and simple

    return RedirectToAction("Index");
}

s/createdEventMessdage/createdEventMessage