问题描述
我们现在可以使用异步/的await关键词在ASP.NET MVC 4。
We can now use the async/await key words in ASP.NET MVC 4.
public async Task<ActionResult> TestAsync()
{
WebClient client = new WebClient();
return Content(await client.DownloadStringTaskAsync("http://www.google.com"));
}
但如何使用它在ASP.NET的WebForms?
But how to use it in ASP.NET WebForms?
推荐答案
一个简单的方法是只让你的事件处理程序异步
。首先,添加异步=真正的
参数设置为 @Page
指令,然后你应该能够编写异步事件处理这样:
One easy way is to just make your event handlers async
. First, add the Async="true"
parameter to the @Page
directive, and then you should be able to write async event handlers as such:
protected async void Page_Load(object sender, EventArgs e)
{
var client = new WebClient();
var content = await client.DownloadStringTaskAsync("http://www.google.com");
Response.Write(content);
}
我说:应该能,因为我还没有真正尝试这一点我自己。但它应该工作。
I say "should be able to" because I haven't actually tried this out myself. But it should work.
更新:这确实的不的为的Page_Load
工作(见this MSDN论坛主题),而应适用于其他的事件,如按钮点击。
Update: This does not work for Page_Load
(see this MSDN forum thread), but should work for other events such as button clicks.
更新:此的确实的在ASP.NET 4.5 的Page_Load
的工作。此外,他们增加了检查,如果不正确使用异步
事件处理程序。
Update: This does work for Page_Load
in ASP.NET 4.5. Also, they added checks if you improperly use an async
event handler. See this video for details.
这篇关于如何使用异步/等待在asp.net网络表单来实现异步页?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!