async Task SaveThumbnail(CanvasBitmap thumbnail, string suffix)
{
using (var stream = await outputFolder.OpenStreamForWriteAsync(exampleDefinition.ThumbnailFilename(suffix), CreationCollisionOption.ReplaceExisting))
{
await thumbnail.SaveAsync(stream.AsRandomAccessStream(), CanvasBitmapFileFormat.Png);
}
}
async Task SaveThumbnail(CanvasBitmap thumbnail, string suffix)
{
// Dispatch the file open operation back onto the UI thread (some machines have issues doing this elsewhere).
var streamSource = new TaskCompletionSource <Stream>();
await uiThreadDispatcher.RunAsync(CoreDispatcherPriority.Normal, async() =>
{
try
{
var stream = await outputFolder.OpenStreamForWriteAsync(exampleDefinition.ThumbnailFilename(suffix), CreationCollisionOption.ReplaceExisting);
streamSource.SetResult(stream);
}
catch (Exception e)
{
streamSource.SetException(e);
}
});
// Save the bitmap.
using (var stream = await streamSource.Task)
{
await thumbnail.SaveAsync(stream.AsRandomAccessStream(), CanvasBitmapFileFormat.Png);
}
}
