Question

我想只更新数据库的一个字段。我在我的Controller（AOProf Controller）中创建了一个如下所示的函数：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Accommodation_App.Models;
using System.Data.Entity;

namespace Accommodation_App.Controllers
{
    public class AOProfController : Controller
    {

        private StudAccommodationEntities1 SContextUser;
        private DbSet<User> UserDb;

        private StudAccommodationEntities1Entities SContextProp;
        private DbSet<Property> Properties;

        public AOProfController()
        {
            SContextUser = new StudAccommodationEntities1();
            UserDb = SContextUser.UserDb;

            SContextProp = new StudAccommodationEntities1Entities();
            Properties = SContextProp.Properties;
        }
[HttpPost]
public ActionResult Reject(int id)
{

    Property obj = Properties.Find(id);
    if (obj != null)
    {
        obj.isApproved = false;
        UpdateModel(obj);
        SContextProp.SaveChanges();

    }

    else{
        return Content("Not such an object");    
     }
    return Content("the rejected is confirmed");
}

在我看来，我从onclick事件中调用了这个函数。我之前发送了参数给视图。它发送正确。

  <button value="Reject" onclick="location.href='@Url.Action("Reject", "AOProf", new { id = item.ProId })'" >Reject</button>

点击按钮后显示在网址栏中的网址是

http://localhost:54464/AOProf/Reject/1

看起来不错，但记录在数据库中不会更新。它将保持不变。你能帮我理解如何以正确的方式做到这一点吗？

NET MVC 5：仅更新数据库中的一个字段

0 个答案: