public JsonResult ConsultarAlunos()
        {
            try
            {
                //consultar os alunos
                List <Aluno> alunos = business.ConsultarTodos();

                //convertendo para a model
                List <AlunoConsultaViewModel> model
                    = Mapper.Map <List <AlunoConsultaViewModel> >(alunos);

                return(Json(model, JsonRequestBehavior.AllowGet));
            }
            catch (Exception e)
            {
                Response.StatusCode = 500; //INTERNAL SERVER ERROR
                return(Json(e.Message, JsonRequestBehavior.AllowGet));
            }
        }