protected void btnGuardar_Click(object sender, EventArgs e) { if (Session["rutaExcel"] == null) { pcError.ShowOnPageLoad = true; lblError.Text = "Debe cargar la grilla"; } else { DataTable tabla = OpenExcelFile(Session["rutaExcel"].ToString()); if (tabla.Rows.Count > 0) { string rta = ControladorGeneral.InsertarActualizarContratosMarcosPorTabla(tabla); if (rta != "ok") { pcError.ShowOnPageLoad = true; lblError.Text = rta; } Session["rutaExcel"] = null; } } }