async Task<RecordMetadata> UpdateData()
{
String request = String.Format(this._urlTemplate, this._nextPageNum);
// Create an HttpClient instance
HttpClient client = new HttpClient();
String urlContents = await client.GetStringAsync(request);
this._lastData = JsonConvert.DeserializeObject<RecordMetadata>(urlContents);
this._currentPage = this._nextPageNum;
this._nextPageNum++;
//OnRaiseCustomEvent(new DataRetrieverEventArgs(this._lastData));
return this._lastData;
/*
// Send a request asynchronously continue when complete
client.GetAsync(request).ContinueWith(
(requestTask) =>
{
// Get HTTP response from completed task.
HttpResponseMessage response = requestTask.Result;
// Check that response was successful or throw exception
//response.EnsureSuccessStatusCode();
if (response.StatusCode == HttpStatusCode.OK)
{
// Read response asynchronously as JsonValue and write out top facts for each country
response.Content.ReadAsStringAsync().ContinueWith(
(task) =>
{
if (task.Exception == null)
{
if (!task.IsCanceled)
{
this._lastData = JsonConvert.DeserializeObject<RecordMetadata>(task.Result);
this._currentPage = this._nextPageNum;
this._nextPageNum++;
OnRaiseCustomEvent(new DataRetrieverEventArgs(this._lastData));
}
}
}
);
}
else
{
System.Threading.Thread.Sleep(100);
Console.WriteLine("re-try");
this._nextPageNum++;
UpdateData();
}
});
*/
//_wc.DownloadDataAsync(new Uri(request));
}
/// <summary>
/// Starts an asynchronous request for the first page
/// </summary>
public async Task<RecordMetadata> GetFirstPage()
{
this._lastData = null;
this._nextPageNum = 1;
return await UpdateData();
}
public DataRetriever()
{
_lastData = null;
}
public DataRetrieverEventArgs(RecordMetadata rm)
{
this.rm = rm;
}
/// <summary>
/// Starts an asynchronous request for the first page
/// </summary>
public async Task <RecordMetadata> GetFirstPage()
{
this._lastData = null;
this._nextPageNum = 1;
return(await UpdateData());
}
public DataRetriever()
{
_lastData = null;
}
public DataRetrieverEventArgs(RecordMetadata rm)
{
this.rm = rm;
}
