private void btnADD_Click(object sender, EventArgs e)
        {
            if (tbDeviceName.Text == "")
            {
                MessageBox.Show(lbDeviceName.Text + "不能为空"); return;
            }
            if (tbDeviceAddress.Text == "")
            {
                MessageBox.Show(lbDeviceAddress.Text + "不能为空"); return;
            }
            string dbPath = "Data Source =" + Environment.CurrentDirectory + @"\dataBase\DeviceInfo.db";

            DeviceManagement.DeviceInfo device = new DeviceManagement.DeviceInfo();
            device.ID   = (UInt32)Convert.ToInt32(tbID.Text);
            device.name = tbDeviceName.Text;
            device.mac  = tbDeviceAddress.Text;
            deviceManagement.AddDevice(device); /* 添加设备 */
            InitDataGridView();                 /* 刷新表格 */
        }