异步Web响应的Windows Phone 8 [英] asynchronous web response windows phone 8

问题描述

这是code我用它来下载网址为HTML。问题是，有没有什么办法可以做到
这个异步？的问题，我想知道该响应是否是成功的，哪些是在响应程序继续之前。这将是完美的，如果你能等待client.DownloadStringAsync和task.delay并不总是可行的，除了我不喜欢设定一个标准的时间去等待的这个想法。谢谢！

 开放的URI =新的URI（URL）;
        Web客户端的客户端=新的WebClient（）;
        client.DownloadStringCompleted + =新DownloadStringCompletedEventHandler（client_DownloadStringCompleted）;
        client.AllowReadStreamBuffering = TRUE;
        client.DownloadStringAsync（URI）;
 

解决方案

有两种解决方案。

第一个（我建议）是使用 Microsoft.Net.Http的NuGet包，改变你的code使用新的的HttpClient ，而不是旧 Web客户端：

 开放的URI =新的URI（URL）;
HttpClient的客户端=新的HttpClient（）;
等待client.GetStringAsync（URI）;
 

第二个解决方案将允许您 Web客户端继续使用，因此它可以作为临时的解决办法，如果你有这取决于<$其他很多code的工作C $ C> Web客户端。要使用异步与 Web客户端，安装的 Microsoft.Bcl.Async的NuGet包，然后你可以使用 DownloadStringTaskAsync ：

 开放的URI =新的URI（URL）;
Web客户端的客户端=新的WebClient（）;
等待client.DownloadStringTaskAsync（URI）;
 

This is the code I use to download an URL as html. The thing is, is there any way I can do this asynchronous? the problem I want to know whether the response is successful and what is in the response before the program continues. It would be perfect if you could await client.DownloadStringAsync and a task.delay won't always work besides I don't like that idea of setting an standard time to wait. Thank you!

        Uri uri = new Uri(url);
        WebClient client = new WebClient();
        client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
        client.AllowReadStreamBuffering = true;
        client.DownloadStringAsync(uri);

解决方案

There are two solutions.

The first one (which I recommend) is to use the Microsoft.Net.Http NuGet package and change your code to use the new HttpClient instead of the old WebClient:

Uri uri = new Uri(url);
HttpClient client = new HttpClient();
await client.GetStringAsync(uri);

The second solution will allow you to continue using WebClient, so it may work as a temporary fix if you have a lot of other code depending on WebClient. To use async with WebClient, install the Microsoft.Bcl.Async NuGet package, and then you can use DownloadStringTaskAsync:

Uri uri = new Uri(url);
WebClient client = new WebClient();
await client.DownloadStringTaskAsync(uri);

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