protected void Page_Load(object sender, EventArgs e) { try { if (!IsPostBack) { rol_.DataSource = Validar.Consulta(rol.ConsultarRol()); rol_.DataTextField = "rol"; rol_.DataValueField = "idrol"; rol_.DataBind(); } } catch (Exception ex) { textError.InnerHtml = ex.Message; Alerta.CssClass = "alert alert-error"; Alerta.Visible = true; } }