RasterImageViewer Class

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Controls; 
 
public async Task RasterImageViewerExample() 
{ 
   Uri imageUrl = new Uri("ms-appx:///Assets/PngImage2.png"); 
   // Zoom current image by a 2 
   _viewer.Zoom(ImageViewerSizeMode.None, 2, _viewer.ImageControlCenter); 
 
   // Scroll by 100 and 200 pixels 
   _viewer.ScrollBy(new Point(100, 200)); 
 
   // Tell the _viewer to not change the scale factor and scroll position when a new image is set 
   // The easiest way is to get all options then remove the ones you do not want to change 
   ImageViewerNewImageResetOptions resetOptions = ImageViewerNewImageResetOptions.All; 
   resetOptions &= ~(ImageViewerNewImageResetOptions.ScaleFactor |   ImageViewerNewImageResetOptions.ScrollOffset); 
   _viewer.NewImageResetOptions = resetOptions; 
 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      StorageFile imageFile = await StorageFile.GetFileFromApplicationUriAsync(imageUrl); 
      _viewer.Image = await codecs.LoadAsync(LeadStreamFactory.Create(imageFile)); 
   } 
}