public async Task UpdateFaceMaskInDrugStoreData()
        {
            //call api
            var faceMaskData = await OpenDataService.Instance.GetFaceMaskData();

            try
            {
                //有資料更新時重置 DB 的該 Table 所有資訊。
                DrugStoresDbConnection.DropTable <Models.FaceMaskInDrugStore>();

                DrugStoresDbConnection.CreateTable <Models.FaceMaskInDrugStore>();

                System.Diagnostics.Debug.WriteLine($"DBService-FaceMaskInDrugStoreData Count: {faceMaskData?.Count}");

                DrugStoresDbConnection.InsertAll(faceMaskData, true);
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine($"DBService Exception: {ex.Message}");
            }
            finally
            {
                Xamarin.Essentials.Preferences.Set("FaceMaskDataUpdateDateTime", DateTime.Now);
            }
        }
        private async void BuildDrugStoreBaseData()
        {
            var drugStoreData = string.Empty;
            var dataStream    = await Xamarin.Essentials.FileSystem.OpenAppPackageFileAsync("drugstore-data.txt");

            using (var streamReader = new StreamReader(dataStream, Encoding.UTF8))
            {
                drugStoreData = streamReader.ReadToEnd();
            }

            var result = CheckDrugStoreIsNeedUpdate(ref drugStoreData);

            if (result.Item1)
            {
                try
                {
                    //有資料更新時重置 DB 的該 Table 所有資訊。
                    DrugStoresDbConnection.DropTable <Models.DrugStore>();

                    DrugStoresDbConnection.CreateTable <Models.DrugStore>();

                    var drugStores = JsonConvert.DeserializeObject <List <Models.DrugStore> >(drugStoreData);
                    System.Diagnostics.Debug.WriteLine($"DBService-DrugStoreData Count: {drugStores?.Count}");

                    DrugStoresDbConnection.InsertAll(drugStores, true);
                }
                catch (Exception ex)
                {
                    System.Diagnostics.Debug.WriteLine($"DBService Exception: {ex.Message}");
                }
                finally
                {
                    Xamarin.Essentials.Preferences.Set("DrugStore_Data_Var", result.Item2);
                }
            }
        }