Convert ImageSource into IRandomAccessStream

Question

I have loaded image im my app with type ImageSource, and I want to share it, but I need to convert image to IRandomAccessStream.

For e.g.:

  ImageSource _myLoadedImage; 
  IRandomAccessStream ras; 
  //Some code when _myLoadedImage convert to IRandomAccessStream 
  RandomAccessStreamReference.CreateFromStream(ras);

How can I do that?

Answer 1

There's not really a way to get at the pixel buffer unless it's a WriteableBitmap. If you have the original image data stream/file (ie a png or jpeg) you can use the decoder to get at it and later convert that into an image source. I do something like this in my blogpost here: http://www.iter.dk/post/2012/10/08/Using-User-Provided-Images-for-Secondary-Tiles.aspx