public string DropEnrolledSchedule(string studentId, int scheduleId)
{
var errors = new List<string>();
var repository = new StudentRepository(this.entities);
var service = new StudentService(repository);
service.DropEnrolledSchedule(studentId, scheduleId, ref errors);
if (errors.Count == 0)
{
return "ok";
}
return "error";
}