Linq not being recognized parse in query

Question

I am trying to make a login page. When I try to receive the userdata with linq I get an exception because I try to use Parse in my query. I searched a bit online and found out it is because Linq doesn't recognize Parse. From what I understand I have to translate the not recognisable code to code that linq/slq recognises. Since I have just started using linq queries I have no idea how to accomplish this.

My query:

    public static UserDetails GetUser(UserDetails userde)
    {
        var usr = from u in db.Users
                  join r in db.Roles on u.RoleId equals r.IdRole
                  where u.Email == userde.Email && u.Active == true

                  select new UserDetails 
                             { Firstname = u.Firstname,
                               Surname = u.Surname,
                               Email = u.Email,
                               Function = u.Function,
                               Password = u.Password,
                               Salt = u.Salt,
                               Userroles = (UserRoles)Enum.Parse(typeof(UserRoles), r.Role1) 
                             };

        return usr.FirstOrDefault();
    }

I checked these articles:

Linq not being recognized parse in query

1 Answers