ASP.NET MVC更新用户配置文件(实体框架)

Question

我是asp.net的初学者，一旦登录用户，我就会添加"用户更新"函数。

我尝试将代码添加到下面的控制器页面，但它行不通。如果有人能给我建议如何解决这些问题，我会很感激。

我使用实体框架，以下是我的代码

-controller-

public class AccountController : Controller
    {
        TravelExpertsEntities db = new TravelExpertsEntities();
...

 public ActionResult Edit()
        {

            string username = User.Identity.Name;
            // Fetch the userprofile
            Customer user = db.Customers.Where(u => u.CustUserId.Equals(username)).FirstOrDefault();
            // Construct the viewmodel
            Customer model = new Customer();
            model.CustFirstName = user.CustFirstName;
            model.CustLastName = user.CustLastName;
            model.CustEmail = user.CustEmail;
           //...
            return View(model);

        }
        [HttpPost]
        public ActionResult Edit(Customer user)
        {
            using (TravelExpertsEntities db = new TravelExpertsEntities())
            {
                var usr = db.Customers.Where(u => u.CustUserId.Equals(user.CustUserId) && u.CustPassword.Equals(user.CustPassword)).FirstOrDefault();
                if (usr != null)
                {
                    // Update fields
                    user.CustFirstName = usr.CustFirstName;
                    user.CustLastName = usr.CustLastName;
                    user.CustEmail = usr.CustEmail;
                    //...
                    db.Entry(user).State = EntityState.Modified;
                    db.SaveChanges();
                }
                return RedirectToAction("Home", "Home");
            }
            return View(user);
        }
}
-MODEL-
public partial class Customer
    {
        [Key]
        public int CustomerId { get; set; }
        [DisplayName("First Name")]
        [Required(ErrorMessage = "First Name is required")]
        public string CustFirstName { get; set; }
        [DisplayName("Last Name")]
        [Required(ErrorMessage = "Last Name is required")]
        public string CustLastName { get; set; }
        [DisplayName("Address")]
        [Required(ErrorMessage = "Address is required")]
        public string CustAddress { get; set; }
     //...
    }

Answer 1

@m.k。Kim尝试一下：

`

    public ActionResult Edit()
    {

        string username = User.Identity.Name;
        // Fetch the userprofile
        Customer user = db.Customers.Where(u => u.CustUserId.Equals(username)).FirstOrDefault();

        return View(user);
    }

`

因此，您可以更改控制器，看起来像这样

[HttpPost]
    public ActionResult Edit(Customer user)
    {
        using (TravelExpertsEntities db = new TravelExpertsEntities())
        {
            if (user!= null)
                //...
                db.Entry(user).State = EntityState.Modified;
                db.SaveChanges();
            }
            return RedirectToAction("Home", "Home");
        }
        return View(user);
    }

但是，下次使用ViewModel将是一个很好的编码实践。这可能会有所帮助：https：//learn.microsoft.com/en-us/aspnet/mvc/overview/older-older-versions/mvc-music-store/mvc-music-store-store-part-part-3