public bool Actualizar(int id, string name, string lastname, Double money,Double debe ,DateTime date)
 {
     try {
         db = new FigthersEntities();
         Alumno someone = db.Alumno.FirstOrDefault(a=> a.Id == id);
         someone.nombre = name;
         someone.apellido = lastname;
         someone.pago = money;
         someone.fechaPago = date;
         someone.debe = debe;
         db.SaveChanges();
         return true;
     }
     catch { return false; }
 }
        public bool DeleteAlumn(int id)
        {
            try {
                db = new FigthersEntities();
                Alumno someone = db.Alumno.FirstOrDefault(a => a.Id == id);

                if (someone == null)
                {
                    return false;
                }
                else {
                    db.Alumno.Remove(someone);
                    db.SaveChanges();
                    return true;
                }
            }
            catch { return false; }
        }
 public bool AddAlumn(int id, string name, string lastname, Double money, Double debe,DateTime date)
 {
     try
     {
         db = new FigthersEntities();
         Alumno someone = new Alumno();
         someone.Id = id;
         someone.nombre = name;
         someone.apellido = lastname;
         someone.pago = money;
         someone.debe = debe;
         someone.fechaPago = date;
         someone.habilitado = true;
         db.Alumno.Add(someone);
         db.SaveChanges();
         return true;
     }
     catch
     {
         return false;
     }
 }