private void wclient_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
Deployment.Current.Dispatcher.BeginInvoke(() => {
if (_waiting.ContainsKey((WebClient)sender))
{
ActionDownloadFileArg arg = _waiting[(WebClient)sender];
try {
var streamResourceInfo = new StreamResourceInfo(e.Result, null);
var userStoreForApplication = IsolatedStorageFile.GetUserStoreForApplication();
if (userStoreForApplication.FileExists(arg.FileSaveName))
{
userStoreForApplication.DeleteFile(arg.FileSaveName);
}
using (IsolatedStorageFileStream isolatedStorageFileStream = userStoreForApplication.CreateFile(arg.FileSaveName)){
var buf = new byte[1024];
int readcount = 0;
while ((readcount = streamResourceInfo.Stream.Read(buf, 0, buf.Length)) != 0)
{
isolatedStorageFileStream.Write(buf, 0, readcount);
}
}
Done(arg);
} catch (Exception ex) {
Cancel(arg);
}
}
});
}
void download(ActionDownloadFileArg arg)
{
WebClient wclient = new WebClient();
_waiting.Add(wclient, arg);
wclient.OpenReadCompleted += wclient_OpenReadCompleted;
wclient.OpenReadAsync(new Uri(arg.FileUrl, UriKind.Absolute));
}
public override bool precheckToDo(ActionArgs e)
{
ActionDownloadFileArg arg = e as ActionDownloadFileArg;
return(arg != null && arg.FileUrl.Length > 0 && arg.FileSaveName.Length > 0);
}