您好RAMESHKUMAR SWANKARI，

Hi RAMESHKUMAR SWANKARI,

我们可以将await表达式用于  HttpClient.PostAsync方法。然后我们就可以得到HttpClient的状态。

We can use the await expression to the HttpClient.PostAsync method. And then we can get the state of the HttpClient.

例如：

private HttpClient httpClient;
private CancellationTokenSource cts;
private void OnProgress(IBackgroundTaskRegistration task, BackgroundTaskProgressEventArgs args)
{
    string u = "http://localhost/HttpClientSample/default.aspx";
    var myuir = new Uri(u);
    string str = "hello";
    var b = new HttpStringContent(str);
        var ignored = Dispatcher.RunAsync(CoreDispatcherPriority.Normal, async () =>
        {
            try
            {
                Windows.Web.Http.HttpResponseMessage response = await httpClient.PostAsync(myuir, b).AsTask(cts.Token);
            }
            catch (TaskCanceledException)
            {
            }
            catch (Exception ex)
            {
            }
            finally
            {
            }
    });
}

***的问候，

Jayden Gu

Jayden Gu