public MainWindow()
{
InitializeComponent();
///////////////////////////////////////////////////////
AutoResetEvent downloadWaitEvent = new AutoResetEvent(false);
WebClient webClient = new WebClient();
webClient.DownloadDataCompleted += new DownloadDataCompletedEventHandler(rr);
var imgUrl = "http://img4.cache.netease.com/m/2013/12/18/20131218104403bd5df.png";//
//
webClient.DownloadDataAsync(new Uri(imgUrl), downloadWaitEvent);
if (downloadWaitEvent.WaitOne(10000)) //
{
//
System.Windows.MessageBox.Show("ll");
//
}
else
{
webClient.CancelAsync();
System.Windows.MessageBox.Show("CancelAsync");
}
}
private void rr(object sender, DownloadDataCompletedEventArgs e)
{
//
var waiterTmp = (AutoResetEvent)e.UserState;
//
try
{
//
if (!e.Cancelled && e.Error == null)
{
var bytes = e.Result;
//
}
}
finally
{
//
waiterTmp.Set(); //
//
}
}
