Why is the value that I update in my model inside an MVC3 controller not displayed on the client?

Question

I have a controller action UpdateCustomer(CustomerDto customer)that returns PartialViewResultwith a model, which is also CustomerDto:

[HttpPost]
public PartialViewResult UpdateCustomer(CustomerDto customer)
{
    CustomerDto updatedCustomer = _customerService.UpdateCustomer(customer);
    updatedCustomer.Name = "NotThePostedName";
    return PartialView("CustomerData", updatedCustomer);
}

In my opinion, I have the following line:

@Html.TextBoxFor(model => model.Name)

So far so good. In my opinion, I am making an asynchronous record for this action method, the model binding does its job, and I can update the client in the database. Then I want to provide the client with an updated client. For example, I would like to change the client name in my controller. However, what is obtained is always properties from published customer, not properties from updatedCustomer.

MVC3 , , . -, (?) MVC3, ViewData.ModelState ViewData.Model.

366-367 System.Web.Mvc.Html.InputExtensions:

string attemptedValue =
    (string) htmlHelper.GetModelStateValue(fullName, typeof(string));
tagBuilder.MergeAttribute("value",
    attemptedValue ?? ((useViewData)
        ? htmlHelper.EvalString(fullName)
        : valueParameter), isExplicitValue);

, attemptedValue ModelState. CustomerDto.Name (, ).

, ? ? , , , , .

Answer 1

, (ModelState ), ModelState :

ModelState["Name"].Value = updatedCustomer.Name;