如何在WindowsPhone8.1/Windows8.1中为http客户端请求操作设置超时

使用CancellationToken:

try 
{
    CancellationTokenSource cts = new CancellationTokenSource(2000); // 2 seconds
    HttpClient client = new HttpClient();
    HttpResponseMessage respOnse= await
        client.SendRequestAsync(request).AsTask(cts.Token);
}
catch (TaskCanceledException ex)
{
    // Catch operation aborted ...
}