private void MClient_MqttMsgPublishReceived(object sender, MqttMsgPublishEventArgs e)
        {
            this.Invoke((MethodInvoker)delegate { //async

                int rowNum = dataGridView1.Rows.Add();
                DataGridViewRow row = dataGridView1.Rows[rowNum];

                string[] data;
                if (String.Equals(e.Topic, "topicTemperature"))
                {
                    data = Encoding.UTF8.GetString(e.Message).Split(null); //"2 22.3 04/12/2019";
                    row.Cells["id"].Value = data[0];
                    row.Cells["temperature"].Value = data[1];
                }

                if (String.Equals(e.Topic, "topicHumidity"))
                {
                    data = Encoding.UTF8.GetString(e.Message).Split(null); //"2 22.3 04/12/2019";
                    row.Cells["humidity"].Value = data[1];
                }

                if (String.Equals(e.Topic, "topicBatery"))
                {
                    data = Encoding.UTF8.GetString(e.Message).Split(null); //"2 99 04/12/2019";
                    row.Cells["batery"].Value = data[1];
                    row.Cells["date"].Value = data[2];
                }
            });
        }