如何才有可能终止这种方法/下载功能？

How would it be possible to terminate this method / download function?

private void Download_Click(object sender, EventArgs e)
{
    WebClient webClient = new WebClient();
    webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed);
    webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(ProgressChanged);
    webClient.DownloadFileAsync(new Uri("http://google.com/test.zip"), @"test.zip");

}

基本上取消了下载功能

Basically cancel the download function

推荐答案

做到这一点： webClient.CancelAsync（）;