登录过程使用实体框架asp.net mvc

本文关键字：asp net mvc 框架 实体 过程 登录 | 更新日期: 2023-09-27 18:29:57

我想在我的项目中进行登录密码验证。当用户点击登录按钮时，编译器会转到这个方法

public ActionResult VerifyPassword(User user)
{
    var givenPassword =user.Password;
    var givenUserName=user.UserName;
//now i need compare password 
    var myUser=db.User.Find(somevalue)//find user from database,
    But how can i do this????Because somevalue needs to be a Primary Key
}

如果我做错了什么。请给我指正确的方向我在网上搜索了很多，但没有找到使用实体框架来实现这一点的教程。

登录过程使用实体框架asp.net mvc

您实际上不需要主键来匹配数据库中的用户。

您可以使用他们的用户名（应该是唯一的）在数据库中查找他们的记录。

试试这样的东西：

public ActionResult VerifyPassword(User user)
{
    //The ".FirstOrDefault()" method will return either the first matched
    //result or null
    var myUser = db.Users
        .FirstOrDefault(u => u.Username == user.Username 
                     && u.Password == user.Password);
    if(myUser != null)    //User was found
    {
        //Proceed with your login process...
    }
    else    //User was not found
    {
        //Do something to let them know that their credentials were not valid
    }
}

还可以考虑对模型验证进行一些研究，研究ModelState.IsValid是一个很好的开始。

应该这样修改。。。

public ActionResult VerifyPassword(User user)
        {
            //The ".FirstOrDefault()" method will return either the first matched
            //result or null
            User myUser = dbContext.Users.FirstOrDefault
                (u => u.Username.Equals(user.Username) && u.Password.Equals(user.Password));
            if (myUser != null)   
            {
                //User was found
                //Proceed with your login process...
            }
            else    //User was not found
            {
                //Do something to let them know that their credentials were not valid
            }
        }

    public ActionResult Login(StudentLogin sl)
    {
        if (sl.Email != null)
        {
            if (ModelState.IsValid) // this is check validity
            {
                StudentEntities1 se = new StudentEntities1();
                var v = se.StudentLogins.Where(a => a.Email.Equals(sl.Email) && a.Password.Equals(sl.Password)).FirstOrDefault();
                if (v != null)
                {
                    Session["LogedUserID"] = v.Id.ToString();
                    //Session["LogedUserFullname"] = v.FullName.ToString();
                    return RedirectToAction("Success", "Student");
                }
            }
            return View(sl);
        }
        else
        {
            return View();
        }
    }

public ActionResult Login(Login_T l)
    {
        using (AppHREntities db = new AppHREntities())
        {
            var obj = db.Login_T.Where(a => a.UserName.Equals(l.UserName) && a.Password.Equals(l.Password) && l.Type.Equals("HR")).Count();
            var obj1 = db.Login_T.Where(a => a.UserName.Equals(l.UserName) && a.Password.Equals(l.Password) && l.Type.Equals("USER")).Count();
            if (obj > 0)
            {
                MessageBox.Show("SUCESSFULLY LOGGED IN.");
                return RedirectToAction("../Home/HR_Dashboard");
            }
            else if(obj1 > 0)
            {
                MessageBox.Show("SUCESSFULLY LOGGED IN.");
                return RedirectToAction("../Home/Emp_Dashboard");
            }
            else
            {
                MessageBox.Show("WRONG PASSWORD.");
                return RedirectToAction("Index");
            }
        }
    }
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