C# @当相应属性具有值时，Html.TextBoxFor（）生成空文本框

我已经创建了一个默认的ASP.NET MVC 5项目

我已将FullName属性添加到用户：

public class ApplicationUser : IdentityUser
{
    public string FullName { get; set; }
}

还将此属性添加到viewmodel：

public class ManageUserViewModel
{
    [Display(Name = "Name")]
    public string FullName { get; set; }

    ...
}

并在视图上显示一个文本框：

@Html.TextBoxFor(m => m.FullName)

它工作得很好，我可以设置用户的全名。我只有一个问题：如果用户已经设置了全名，文本框仍然是空的。如何使其具有FullName属性的实际值

编辑：

这是显示带有文本框的视图的控制器：

    public ActionResult Manage(ManageMessageId? message)
    {
        ViewBag.StatusMessage =
            message == ManageMessageId.ChangePasswordSuccess ? "Your password has been changed."
            : message == ManageMessageId.ChangeDetailsSuccess ? "Your details have been changed."
            : message == ManageMessageId.SetPasswordSuccess ? "Your password has been set."
            : message == ManageMessageId.RemoveLoginSuccess ? "The external login was removed."
            : message == ManageMessageId.Error ? "An error has occurred."
            : "";
        ViewBag.HasLocalPassword = HasPassword();
        ViewBag.ReturnUrl = Url.Action("Manage");
        return View();
    }

您需要1）获取要查找的

ApplicationUser

，2）将属性绑定到视图模型

public ActionResult Manage(ManageMessageId? message)
{
    ViewBag.StatusMessage =
        message == ManageMessageId.ChangePasswordSuccess ? "Your password has been changed."
        : message == ManageMessageId.ChangeDetailsSuccess ? "Your details have been changed."
        : message == ManageMessageId.SetPasswordSuccess ? "Your password has been set."
        : message == ManageMessageId.RemoveLoginSuccess ? "The external login was removed."
        : message == ManageMessageId.Error ? "An error has occurred."
        : "";
    ViewBag.HasLocalPassword = HasPassword();
    ViewBag.ReturnUrl = Url.Action("Manage");

    // Get the currently logged on user
    var user = UserManager.FindById(User.Identity.GetUserId());

    // Copy the value of FullName to the view model
    var vm = new ManageUserViewModel {
        FullName = user.FullName
    };
    return View(vm);
}

---

返回视图时，是否在控制器中正确映射它？您必须从

应用程序用户

中获取

全名

，并将其放在视图模型中。在.cshtml中设置断点并检查Model@JLe字体恐怕我没有。我该怎么做？我添加了控制器方法，该方法返回包含文本框的视图。@插图：设置断点后，如何在调试cshtml时访问模型？只需使用DirectInput窗口并键入model.FullName即可