The async and await keyword is used in C# for asynchronous programming.
An application with a GUI, check the content of the queue and if an unprocessed task is there, it takes it out and processes it first. The code executes synchronously and the unprocessed task is completed first. The application will show stop responding to messages if the processing takes more time than expected.
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Let us see what is discussed above −
private void OnRequestDownload(object sender, RoutedEventArgs e) {
var req = HttpWebRequest.Create(_requestedUri);
var res = req.GetResponse();
}要解决上述问题，请使用 async 和 await 关键字 −
private async void OnRequestDownload(object sender, RoutedEventArgs e) {
var req= HttpWebRequest.Create(_requestedUri);
var res = await req.GetResponseAsync();
}以上就是C# 中的异步和等待关键字的详细内容，更多请关注php中文网其它相关文章！
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