WPF异步加载BitmapImage

当你在WPF主线程中时不时需要加载图片时，界面上的Animation会因为IO操作而卡壳，要想保持动画的流畅就必须将IO操作放到后台线程中操作，如下:

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print ?

01	private void ChangeImage() {

02	Image image = new Image();

03

04	new Thread(new ThreadStart(() => {

05	BitmapImage bitmap = new BitmapImage();

06	bitmap.BeginInit();

07	bitmap.UriSource = new Uri(images[index++ % images.Count]);

08	bitmap.CacheOption = BitmapCacheOption.OnLoad;

09	bitmap.EndInit();

10	bitmap.Freeze();

11

12	Dispatcher.BeginInvoke((Action)(() => {

13	image.Source = bitmap;

14	image.Stretch = Stretch.UniformToFill;

15	TransitionBox.Content = image;

16

}));

17

18	})).Start();

19

}