public async Task getNewsAsync()
{
ManagerResult mr = new ManagerResult();
webClient = new HttpClient();
MultipartFormDataContent form = new MultipartFormDataContent();
UriBuilder ub = new UriBuilder(MainHelp.APIUrlNews);
try
{
HttpResponseMessage response = await webClient.GetAsync(ub.Uri);
lastErrorMessage = "";
if (response != null)
{
String strResult = "";
strResult = await response.Content.ReadAsStringAsync();
if (response.StatusCode != HttpStatusCode.OK)
{
APIErrorResponse apiER = JsonConvert.DeserializeObject <APIErrorResponse>(strResult);
mr.Success = false;
mr.WebResponse = apiER;
mr.Message = string.Format("錯誤代碼:{0}, 錯誤訊息:存取網路發生錯誤", response.StatusCode);
lastErrorMessage = mr.Message;
}
else if (response.StatusCode == HttpStatusCode.OK)
{
var readData = JsonConvert.DeserializeObject <NewsJSONData>(strResult);
if (data != null)
{
data = readData;
Items = data.news;
}
await this.WriteToFileAsync();
mr.Success = true;
mr.Result = null;
}
}
else
{
mr.Exception = new Exception(MainHelp.APIInternalError);
mr.Message = string.Format("系統內部發生錯誤:{0}", MainHelp.APIInternalError);
lastErrorMessage = mr.Message;
}
}
catch (Exception ex)
{
mr.Exception = ex;
mr.Message = string.Format("系統發生異常錯誤:{0}", ex.Message.ToString());
lastErrorMessage = mr.Message;
}
}
/// <summary>
/// 將物件資料從檔案中讀取出來
/// </summary>
public async Task ReadFromFileAsync()
{
data = await IsolatedStorageJSON <NewsJSONData> .LoadFromFileAsync(this.DataFolderName, this.DataFileName);
if (data != null && data.news.Any())
{
Items = data.news;
}
else
{
await getNewsAsync();
}
}