我有包含以下数据的JSON文件。我只想获取“命名”和“单位”的数据。请帮助我如何在VB.net中执行此操作？[{"customerId":"999","deviceId":"XXX999","searchDeviceId":"D_XXX999","utc":"2016-04-28T03:37:00.000Z","lat":22.5691,"lng":120.3058,"sensors":[{"naming":"ABC123","factor":null,"unit":"k","period":null},{"naming":"XYZ123","factor":null,"unit":"