Restful服务在Asp.net获取信息

Question

问题是这段代码正在从整个 table 获取用户名和密码，就像我输入第一人称的用户名和第二人称的密码一样，这段代码仍在获取信息，但我只想获取一个用户信息请使用相同的用户名和密码帮助我。

 [System.Web.Http.AcceptVerbs("GET","POST")]
    [HttpGet]
    public User Login(string username, string password)
    {
        if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password))
            return null;


        var user = db.Users.SingleOrDefault(x => x.Email == username);
        var pass = db.Users.SingleOrDefault(x => x.Password == password);


        if (user == null || pass==null )
            return null;


        return user;

    }

Answer 1

你想要这样的东西：

public User Login(string username, string password)
    {
        if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password))
            return null;


        var user = db.Users.SingleOrDefault(x => x.Email == username);
        var pass = user?.Password;


        if (user == null || pass == null)
            return null;

        if (pass != password)
            return null;

        return user;
    }