Question

我正在创建一个带注册和身份验证的应用。我正在使用这篇文章。 https://azure.microsoft.com/en-gb/documentation/articles/web-sites-dotnet-deploy-aspnet-mvc-app-membership-oauth-sql-database/

在启用迁移之前，如文章中那样创建控制器后出现错误。当然，我无法启用迁移会导致很多错误。 我该怎么办？

我搜索了答案，但主要是＆＃39;字符串＆＃39;到＆＃39; int＆＃39;或类似的东西。

完整错误： CS0029 C＃无法隐式转换类型＆＃39; PingGod.Models.ApplicationUser＆＃39;到＆＃39; PingGod.Models.User＆＃39;

我也得到了一些其他错误，但可能只是相反的含义： CS1503 C＃参数1：无法转换为＆＃39; PingGod.Models.User＆＃39;到＆＃39; PingGod.Models.ApplicationUser＆＃39;

提前感谢您的帮助！

using 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 PingGod.Models;

namespace PingGod.Controllers
{
    public class UsersController : Controller
    {
        private ApplicationDbContext db = new ApplicationDbContext();

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

        // GET: Users/Details/5
        public ActionResult Details(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Users users = db.Users.Find(id);  //Here I get error (CS0029)
            if (users == null)
            {
                return HttpNotFound();
            }
            return View(users);
        }

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

        // POST: Users/Create
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "UserId,Name,Address,City,State,Zip,Email,url")] Users users)
        {
            if (ModelState.IsValid)
            {
                db.Users.Add(users);    //Here an error also (CS1503)
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(users);
        }

        // GET: Users/Edit/5
        public ActionResult Edit(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Users users = db.Users.Find(id);   //Here error (CS0029)
            if (users == null)
            {
                return HttpNotFound();
            }
            return View(users);
        }

        // POST: Users/Edit/5
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Edit([Bind(Include = "UserId,Name,Address,City,State,Zip,Email,url")] Users users)
        {
            if (ModelState.IsValid)
            {
                db.Entry(users).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            return View(users);
        }

        // GET: Users/Delete/5
        public ActionResult Delete(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Users users = db.Users.Find(id); //Here eror (CS0029)
            if (users == null)
            {
                return HttpNotFound();
            }
            return View(users);
        }

        // POST: Users/Delete/5
        [HttpPost, ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public ActionResult DeleteConfirmed(int id)
        {
            Users users = db.Users.Find(id);  // Here also an error (CS0029)
            db.Users.Remove(users);  //Here other error (CS1503)
            db.SaveChanges();
            return RedirectToAction("Index");
        }

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

Answer 1

两个用户类都不同，这就是您收到此错误的原因

使用

PingGod.Models.Users users = db.Users.Find(id)

也许这有助于你

cs0029无法隐式转换类型＆＃39; ApplicationUser＆＃39;到用户＆＃39;

1 个答案: