private static void Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (IsoStoreImageSource._cacheDict == null)
{
IsoStoreImageSource._cacheDict = new Dictionary <string, byte[]>();
}
Image img = d as Image;
if (img == null)
{
return;
}
string path = e.NewValue as string;
if (string.IsNullOrEmpty(path))
{
img.Source = null;
}
else if (IsoStoreImageSource._cacheDict.ContainsKey(path))
{
MemoryStream memoryStream = new MemoryStream(IsoStoreImageSource._cacheDict[path]);
IsoStoreImageSource.SetSource(img, (Stream)memoryStream);
memoryStream.Close();
}
else
{
SynchronizationContext uiThread = SynchronizationContext.Current;
Task.Factory.StartNew((Action)(() =>
{
try
{
using (IsolatedStorageFile storeForApplication = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!storeForApplication.FileExists(path))
{
return;
}
IsolatedStorageFileStream stream = storeForApplication.OpenFile(path, FileMode.Open, FileAccess.Read);
uiThread.Post((SendOrPostCallback)(_ =>
{
if (IsoStoreImageSource.CurrentCacheSize < IsoStoreImageSource.MAX_CACHE_SIZE)
{
IsoStoreImageSource._cacheDict[path] = StreamUtils.ReadFullyToByteArray((Stream)stream);
IsoStoreImageSource.CurrentCacheSize += IsoStoreImageSource._cacheDict[path].Length;
}
stream.Position = 0L;
if (IsoStoreImageSource.GetIsoStoreFileName((UIElement)img) == path)
{
IsoStoreImageSource.SetSource(img, (Stream)stream);
}
stream.Close();
}), null);
}
}
catch
{
}
}));
}
}
