更新记录ASP.NET MVC

Question

我有一些问题，这是我的源代码：
控制器：

public ActionResult Index()
{
List<Order> list = new List<Order>();
for (int i = 0; i < 20; i++)
{
list.Add(new Order());
}
list = DatabaseService.DBGetList<Order>("Order");
List<Order> orders = new List<Order>();
for (int i = 0; i < list.Count(); i++)
{
if (list[i].numberOfCompleted == 0)
{
orders.Add(new Order() { id = list[i].id, numberOfCompleted = list[i].numberOfCompleted, customerName = list[i].customerName, foods = list[i].foods });
}
}
return View(orders);
}

订单.cs

public List<Food> foods { get; set; }
public string customerName { get; set; }
public int id { get; set; }
public long totalCost = 0;
public int numberOfCompleted { get; set; }

查看

@foreach (var item in Model)
{
<!--Display attributes-->
<!--Display Complete button-->
<div class="media-container-column col-12 col-lg-3 col-md-4">
<div class="mbr-section-btn align-right py-4">
<button class="btn btn-primary display-4 remove"
data-toggle="modal"
data-target="#exampleModal"
type="submit"
>Complete</button>
</div>
</div>
</div>
</div>
</section>
}

我希望在单击"完成"按钮时，numberOfComplete属性将被指定为food.Count()。我必须做些什么才能做到这一点？

Answer 1

首先在index操作的view页面中创建一个post表单。将其更改为index.cshtml文件。

@foreach (var item in Model)
{
<!--Display attributes-->
<!--Display Complete button-->
<div class="media-container-column col-12 col-lg-3 col-md-4">
@Html.BeginForm("Index","Controller",FormMethod.post)
{
<input type="text" name="id" display="none" value="@item.id"/>
<div class="mbr-section-btn align-right py-4">
<button class="btn btn-primary display-4 remove" data-toggle="modal" data- 
target="#exampleModal" type="submit">Complete</button>
</div>
}
</div>        
}

然后创建index的后动作方法。

[HttpPost]
public ActionResult Index(Order obj)
{
Order order=Order().Find(x=>x.id=obj.id);
order.numberOfComplete = order.food.count();
return view();
}