public async Task<BitmapSource> LoadImageAsync(Stream imageStream, Uri uri)
{
if (imageStream == null)
{
return null;
}
var stream = new InMemoryRandomAccessStream();
imageStream.CopyTo(stream.AsStreamForWrite());
stream.Seek(0);
BitmapImage bitmap = new BitmapImage();
await bitmap.SetSourceAsync(stream);
// convert to a writable bitmap so we can get the PixelBuffer back out later...
// in case we need to edit and/or re-encode the image.
WriteableBitmap bmp = new WriteableBitmap(bitmap.PixelHeight, bitmap.PixelWidth);
stream.Seek(0);
bmp.SetSource(stream);
List<Byte> allBytes = new List<byte>();
byte[] buffer = new byte[4000];
int bytesRead = 0;
while ((bytesRead = await imageStream.ReadAsync(buffer, 0, 4000)) > 0)
{
allBytes.AddRange(buffer.Take(bytesRead));
}
DataContainerHelper.Instance.WriteableBitmapToStorageFile(bmp, uri);
return bmp;
}
