UWP - не отображать данные JSON в виде сетки с определенным условием

Question

У меня есть сетка, данные которой взяты из json. Json:

"error": false,
    "total_data": 210,
    "data_per_page": "200",
    "current_page": 1,
    "total_page": 2,
    "current_total": 200,
    "data": [
        {
            "id": "3415",
            "judul": "",
            "slug": "",
            "cover": "",
            "path": "https://..../dl/dodl/3415",
            "ukuran": "0",
            "formated_size": "0.00 Bytes",
            "fname": "",
            "publish": "1",
            "urgent": "0",
            "kelas": "0",
            "nama_kelas": "Umum"
        },
        {
            "id": "3410",
            "judul": "Ukuran",
            "slug": "ukuran",
            "cover": "https://..../cover/MjEwLnVrdXJhbl90a19wLmpwZw__.jpg",
            "path": "https://.../dl/dodl/3410",
            "ukuran": "4687432",
            "formated_size": "4.47 MB",
            "fname": "MjEwLnVrdXJhbl90ay5wZGY_.pdf",
            "publish": "1",
            "urgent": "0",
            "kelas": "14",
            "nama_kelas": "TK"
        },
        {

Код:

try
{
    string urlPath1 = "https://.../fetch/komik";
    var httpClient1 = new HttpClient(new HttpClientHandler());

    var values1 = new List<KeyValuePair<string, string>>
    {
        new KeyValuePair<string, string>("halaman", "1"),
        new KeyValuePair<string, string>("limit", "20"),
        new KeyValuePair<string, string>("SCH-API-KEY", "SCH_KEnaBiDeplebt")
    };

    var response1 = await httpClient1.PostAsync(urlPath1, new FormUrlEncodedContent(values1));
    response1.EnsureSuccessStatusCode();


    string jsonText1 = await response1.Content.ReadAsStringAsync();
    JsonObject jsonObject1 = JsonObject.Parse(jsonText1);
    JsonArray jsonData1 = jsonObject1["data"].GetArray();

    foreach (JsonValue groupValue1 in jsonData1)
    {
        JsonObject groupObject2 = groupValue1.GetObject();
        string id = groupObject2["id"].GetString();
        string title = groupObject2["judul"].GetString();
        string cover = groupObject2["cover"].GetString();
        string file_path = groupObject2["path"].GetString();
        string size = groupObject2["formated_size"].GetString();
        string slug = groupObject2["slug"].GetString();

        Buku file1 = new Buku();
        file1.ID = id;
        file1.Judul = title;
        file1.Cover = cover;
        file1.File = file_path;
        file1.Size = size;
        file1.Slug = slug + ".pdf";


        if (file1.Size != "0.00 Bytes" || file1.Name != "" || file1.Name != null)
        {
            datasource.Add(file1);
        }
    }
    itemGridView.ItemsSource = datasource;
}
catch (HttpRequestException ex)
{
    busyindicator.IsActive = false;
    loading.Visibility = Visibility.Collapsed;
    RequestException();
}

private void RequestException()
{
    requestErrorStack.Visibility = Visibility.Visible;
}

У меня проблема с моим кодом выше, но с данными formated_size = "0.00 Bytes" или title = "" данные все еще отображаются в виде сетки. Я хочу, если formated_size = "0,00 байт" или title = "", то данные не отображаются в виде сетки. Как вы это исправите?