ASP.NET MVC5在文本框中显示字符串

Question

I have a partial view, which I am passing a model of type WebSite.Models.ManageModel which is simply

public class ManageModel
{
    public string UserEmailAddress { get; set; }
    public ManageUserViewModel ManageUserViewModel { get; set; }
}

I want to access the email address and place it into a TextBox in my partial view. So in that partial view I have

<div class="input-group">
    <div class="col-md-10">
        @Html.TextBoxFor(m => m.ManageUserViewModel.EmailAddress, 
            new 
            { 
                @class = "col-md-10 form-control", 
                @type = "text",
                @placeholder = "Email Address",
                @value = Model.UserEmailAddress
             })
    </div>
</div>
<span class="label label-danger">@Model.UserEmailAddress</span>

Now, the email address correctly displays in the label label-danger but not in my TexBox . What is wrong with this code?

Thanks for your time.

---

Edit. The action that launches the Manage view (which contains my partial views) is

// GET: /Account/Manage.
public ActionResult Manage(ManageMessageId? message)
{
    ViewBag.StatusMessage =
        message == ManageMessageId.ChangePasswordSuccess ? 
            "Your password has been changed": 
        message == ManageMessageId.SetPasswordSuccess ? 
            "Your password has been set" : 
        message == ManageMessageId.RemoveLoginSuccess ? 
            "The external login was removed" : 
        message == ManageMessageId.ChangeEmailAddressSuccess ?
            "Your email address was successfully updated" :
        message == ManageMessageId.Error ? 
            "An error has occurred." : "";
    ViewBag.HasLocalPassword = HasPassword();
    ViewBag.ReturnUrl = Url.Action("Manage");

    // Not passing the model to the view, because I am 
    // unsure how to retrieve the information.
    return View(); 
}

The problem is, I don't know how to retrieve the users data. My ManageUserViewModel is

public class ManageUserViewModel
{
    [Required]
    [EmailAddress(ErrorMessage = "Invalid email address.")]
    [DataType(DataType.EmailAddress)]
    [Display(Name = "Email address")]
    public string EmailAddress { get; set; }

    [Required]
    [DataType(DataType.Password)]
    [Display(Name = "Current password")]
    public string OldPassword { get; set; }

    [Required]
    [StringLength(100, ErrorMessage =
        "The {0} must be at least {2} characters long.", MinimumLength = 6)]
    [DataType(DataType.Password)]
    [Display(Name = "New password")]
    public string NewPassword { get; set; }

    [DataType(DataType.Password)]
    [Display(Name = "Confirm new password")]
    [Compare("NewPassword", ErrorMessage =
        "The new password and confirmation password do not match.")]
    public string ConfirmPassword { get; set; }
}

I know I can get the ApplicationUser data via var user = UserManager.FindById(User.Identity.GetUserId()); but this is the default plus my added EmailAddress field, so it does not contain the password information. What should I be doing in this case?

public class ApplicationUser : IdentityUser
{
    [DataType(DataType.EmailAddress)]
    public string EmailAddress { get; set; }
}

Answer 1

I don't think you can override the value like that without writing your own TextBoxFor extension method. I believe the framework is simply ignoring your @value . Furthermore it seems like your design pattern is a little off, and you have somewhat of a hybrid model where the same information is in two different places.

Try populating your view model ( ManageUserViewModel.EmailAddress ) with the value you want displayed. Obviously I don't know what you're trying to do, but I don't understand the purpose of the nested view model and the UserEmailAddress property.