MVC+EF开发模式总结

1.MVC 视图文件夹名称要和Controllers控制器名保持一致。

2.form表单提交与控制器接收处理

<form id="form1" runat="server" action="/Home/Login" method="post" >
        <div style="text-align: center">

            姓名:<input type="text" name="UserName" />
            密码:<input type="text" name="UserPwd" />
            <input type="submit" value="登录" />

        </div>
    </form>

控制器接收 

#region 会员登录方法
        /// <summary>
        /// 会员登录方法
        /// </summary>
        /// <returns></returns>
        [HttpPost]
        public ActionResult Login(FormCollection form)
        {
            //1.获取页面用户名和密码
            string strName = Request.Form["UserName"];
            string strPwd = Request.Form["UserPwd"];
            //2.验证登录名和密码是否为空
            if (strName == null || strName == "")
            {
                return Content("<script>alert('请填写用户名');history.go(-1);</script>");
            }
            else if (strPwd == null || strPwd == "")
            {
                return Content("<script>alert('请填写密码');history.go(-1);</script>");
            }
            else
            {
               Entities en = new Entities();
               var user= en.Users.Where(u => u.userName ==strName & u.userPwd ==strPwd);
               foreach (var item in user)
               {
                   userId =item.userId;
               }
               if (userId>0)
                {
                    Session["userId"] = userId;
                    return Redirect("/Vote/Index");
                }
                else
                {
                    return Content("<script>alert('用户名或密码错误');history.go(-1);</script>");
                }           
            }
        }

        #endregion

3. mvc跳转页面    return Redirect("/Vote/Index"); /控制器名/action名

4.mvc 弹框  return Content("<script>alert('用户名或密码错误');history.go(-1);</script>");  return Content("投票成功");

5.EF操作数据库  （根据这个创建 Entities en = new Entities();）

带条件的查询    var user= en.Users.Where(u => u.userName ==strName & u.userPwd ==strPwd);

 

新增数据

for (int i = 0; i < str.Length; i++)
                    {
                        //[2]封装对象
                        voteDetail objvoteDetail = new voteDetail()
                        {
                            VoterUserID = UserId,
                            VoteeUserID = Convert.ToInt32(str[i])


                        };
                        //[3]提交数据库保存对象
                        en.voteDetail.Add(objvoteDetail);
                        en.SaveChanges();

                    }
                    return Content("投票成功");