Question

大家好我是asp mvc的新手我的问题是我创建了模型

 using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;

namespace MyDemo.Models
{
    public class Teachers
    {
        public int ID { get; set; }
        [Required]
        public string NAME { get; set; }
        [Required]
        public string LASTNAME { get; set; }
    }
}

然后基于这个模型创建控制器，使用为我创建的脚手架

u

sing System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
using MyDemo.Models;

namespace MyDemo.Controllers
{
    public class TeachersController : Controller
    {
        private MyDemoContext db = new MyDemoContext();

        // GET: Teachers
        public ActionResult Index()
        {
            return View(db.Teachers.ToList());
        }

        // GET: Teachers/Details/5
        public ActionResult Details(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Teachers teachers = db.Teachers.Find(id);
            if (teachers == null)
            {
                return HttpNotFound();
            }
            return View(teachers);
        }

        // GET: Teachers/Create
        public ActionResult Create()
        {
            return View();
        }

        // POST: Teachers/Create
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "ID,NAME,LASTNAME")] Teachers teachers)
        {
            if (ModelState.IsValid)
            {
                db.Teachers.Add(teachers);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(teachers);
        }

        // GET: Teachers/Edit/5
        public ActionResult Edit(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Teachers teachers = db.Teachers.Find(id);
            if (teachers == null)
            {
                return HttpNotFound();
            }
            return View(teachers);
        }

        // POST: Teachers/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Edit([Bind(Include = "ID,NAME,LASTNAME")] Teachers teachers)
        {
            if (ModelState.IsValid)
            {
                db.Entry(teachers).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            return View(teachers);
        }

        // GET: Teachers/Delete/5
        public ActionResult Delete(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Teachers teachers = db.Teachers.Find(id);
            if (teachers == null)
            {
                return HttpNotFound();
            }
            return View(teachers);
        }

        // POST: Teachers/Delete/5
        [HttpPost, ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public ActionResult DeleteConfirmed(int id)
        {
            Teachers teachers = db.Teachers.Find(id);
            db.Teachers.Remove(teachers);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                db.Dispose();
            }
            base.Dispose(disposing);
        }
    }
}

然后使用该控制器创建视图（索引，创建，删除，插入）问题是当我导航到localhost / Teachers / Index时。页面永远加载，没有任何显示。当手动创建另一个模型的另一个控制器时，它工作正常。问题在哪里???

Answer 1

我想检查你的连接字符串。您可以将断点放在TeachersController的索引操作方法中，并查看您是否获得了教师列表。最有可能的错误是与数据库的连接。您可以尝试更改

return View(db.Teachers.ToList()); to just return View();

并且在视图上只写简单的html。

asp mvc页面永远加载

1 个答案: