Async actions inside Silverlight Method - returning the value
- by tyndall
What is the proper way to call an Async framework component - wait for an answer and then return the value. AKA contain the entire request/response in a single method.
Example code:
public class Experiment
{
public Experiment()
{
}
public string GetSomeString()
{
WebClient wc = new WebClient();
wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(wc_DownloadStringCompleted);
Uri u = new Uri("http://news.google.com/news?pz=1&cf=all&ned=us&hl=en&topic=t&output=rss");
wc.DownloadStringAsync(u);
return "the news RSS from Google";
}
private void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
//don't really see how this callback method makes it able
// to return the answer I'm looking for on the return
// statement in the method above.
}
}
MORE INFO:
The reason I'm asking this that I have a project I'm working on where I'd like JavaScript code in the browser to use Silverlight like a Facade/Proxy to Web services and complex calculations & operations. I'd like to make the calls to the [ScriptableMembers] in Silvelight synchronously. I don't want Silverlight to callback into the browser's JavaScript
