我在写一个Silverlight 4应用程序，并想检查当打开安装了浏览器的应用程序，是否存在有效的Internet连接（以下载，然后从我的网站的一些数据）。什么是做到这一点的最好方法是什么？我意识到，我可以把一个尝试捕捉周围的WebRequest，但似乎有点哈克给我。

I'm writing a Silverlight 4 application and would like to check when opening the installed out of browser application, whether there is a valid internet connection (to then download some data from my website). What is the best way to do this? I realise that I could put a try catch around a WebRequest but that seems a bit hacky to me.

修改：我的意思的有效的互联网连接的只是连接到互联网

EDIT: What I meant by valid internet connection is just connected to the internet

推荐答案

您可以直接杀死二鸟一石 Application.CheckAndDownloadUpdateAsync 。当你得到一个假在 UpdateAvailable 处理 Application.CheckAndDownloadUpdateCompleted ，这将意味着任何一个两件事情 - 你的网站不能达到或没有可用的更新。在这两种情况下，你会知道你需要知道的。

You can just kill two birds with one stone with Application.CheckAndDownloadUpdateAsync. When you get a False on UpdateAvailable in handling Application.CheckAndDownloadUpdateCompleted, it's going to mean either one of two things - your site can't be reached or there is no update available. In either case, you'll know what you need to know.