It's simply not loaded at the time you want to access the pixels. Just check the PixelWidth and Height properties.
You should use the WBX methods to load your stuff:
You should use the WBX methods to load your stuff:
Uri imageUri = new Uri(BaseUri, "///Assets/Plan_cathedrale_Amiens.png");
image = await BitmapFactory.New(1, 1).FromContent(imageUri);- Rene