public PM20553 GetStudent(int id)
        {
            var db     = new OOPCSEntities();
            var result = db.PM20553.Find(id);

            db.Dispose();
            return(result);
        }
        public PM20553[] GetStudents()
        {
            var db     = new OOPCSEntities();
            var result = db.PM20553.ToArray();

            db.Dispose();
            return(result);
        }
        public void DeleteStudent(int id)
        {
            var     db      = new OOPCSEntities();
            PM20553 student = db.PM20553.Find(id);

            db.PM20553.Remove(student);
            db.SaveChanges();
            db.Dispose();
        }
        public void UpdateStudent(int id, string code, string name, bool gender, string hometown)
        {
            var     db      = new OOPCSEntities();
            PM20553 student = db.PM20553.Find(id);

            student.Code            = code;
            student.Name            = name;
            student.Gender          = gender;
            student.Hometown        = hometown;
            db.Entry(student).State = System.Data.Entity.EntityState.Modified;
            db.SaveChanges();
            db.Dispose();
        }
        public void CreateStudent(string name, string code, bool gender, string hometown)
        {
            var     db      = new OOPCSEntities();
            PM20553 student = new PM20553();

            student.Code     = code;
            student.Name     = name;
            student.Gender   = gender;
            student.Hometown = hometown;

            db.PM20553.Add(student);
            db.SaveChanges();
            db.Dispose();
        }