C# 编辑 ViewModel

Question

我有我的 ViewModel，我有我的 Controller 可以从 ViewModel 正确显示，但是我不确定如何使 ViewModel 可编辑，以便将编辑后的数据发送回模型。我只想编辑 OrderArchiveViewModel，而不是细节

View 模型；

public class OrderArchiveViewModel

    {
        public int OrderId { get; set; }
        public System.DateTime OrderDate { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public string PostalCode { get; set; }
        public decimal Total { get; set; }
        public bool HasBeenShipped { get; set; }
        public List<OrderDetailArchive> Details { get; set; }
    }

    public class OrderDetailArchive
    {
        public string Title { get; set; }
        public string Colour { get; set; }
        public int Quantity { get; set; }
        public decimal UnitPrice { get; set; }
    }

Controller ；

[Authorize(Roles = "Administrator")]
    public ActionResult Index()
    {

        List<T_shirt_Company_v3.ViewModels.OrderArchiveViewModel> list = (from o in new TshirtStoreDB().Orders
                            .OrderBy(o => o.OrderDate)
                            .Select(o => new OrderArchiveViewModel()
                            {
                                OrderId = o.OrderId,
                                Address = o.Address,
                                FirstName = o.FirstName,
                                LastName = o.LastName,
                                City = o.City,
                                OrderDate = o.OrderDate,
                                PostalCode = o.PostalCode,
                                Total = o.Total,
                                HasBeenShipped = o.HasBeenShipped,
                                Details = (from d in o.OrderDetails
                                           select new OrderDetailArchive
                                           {
                                               Colour = d.Product.Colour,
                                               Quantity = d.Quantity,
                                               Title = d.Product.Title,
                                               UnitPrice = d.UnitPrice
                                           }).ToList()
                            }).ToList()select o).ToList();

        ViewBag.ShippedMessage = list.Where(w => w.HasBeenShipped).Any() ? "Order has been shipped" : "Order is being processed";

        return View(list);
    }

Answer 1

我可以建议你再做两个 Action 。

public ActionResult Edit(int id)

您将通过它的 ID 获得 Order，映射到 ViewModel 并将其传递到您将拥有用于编辑的文本框的 View 。使用更新的模型创建另一个 Action 来接受发布请求:

[HttpPost]
public ActionResult Edit(OrderArchiveViewModel model)

提交编辑页面后，您将拥有一个包含新数据的更新模型，然后通过 Id 在数据库中找到您的模型并更新属性。