Using ManualResetEvent to wait for multiple Image.ImageOpened events
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by umlgorithm
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Published on 2010-04-09T05:07:51Z
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2010/04/09
5:13 UTC
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Dictionary<Image, ManualResetEvent> waitHandleMap = new Dictionary<Image, ManualResetEvent>();
List<Image> images = GetImagesWhichAreAlreadyInVisualTree();
foreach (var image in images)
{
image.Source = new BitmapImage(new Uri("some_valid_image_url"));
waitHandleMap.Add(image, new ManualResetEvent(false));
image.ImageOpened += delegate { waitHandleMap[image].Set(); };
image.ImageFailed += delegate { waitHandleMap[image].Set(); };
}
WaitHandle.WaitAll(waitHandleMap.Values.ToArray());
WaitHandle.WaitAll blocks the current UI thread, so ImageOpened/ImageFailed events would never get fired. Could you suggest me an easy workaround to wait for the multiple ui events?
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