Asp.net中的Restful Service获取信息

Question

The problem is this code is getting username and password from the whole table like if i enter username of first person and password of second person this code still fetching information but i want to fetch only one user info with same username and password please help me.

 [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

You want something like:

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;
    }