http://mschnlnine.vo.llnwd.net/d1/Dev/App_Themes/C9/images/feedimage.png Friend of Coding4Fun, René Schulte, has an full write-up on how to do some simple drawing, loading, and saving with Windows Phone 7.  René even used multi-touch as well! He leverages the WriteableBitmapEx class that extends out the WriteableBitmap Silverlight class. To do a PhotoChooser, the code is simpler than one may think.  Since you're app will navigate away, it works with events. public MainPage() { // ... // Init chooser photoChooserTask = new PhotoChooserTask(); photoChooserTask.Completed += PhotoChooserTaskCompleted; // ... } private void ApplicationBarIconOpenButton_Click(object sender, EventArgs e) { photoChooserTask.Show(); } private void PhotoChooserTaskCompleted(object sender, PhotoResult e) { if (e.TaskResult == TaskResult.OK) { // Load original image and invalidate bitmap so it gets newly rendered var bitmapImage = new BitmapImage(); bitmapImage.SetSource(e.ChosenPhoto); Viewport.Source = bitmapImage; bitmap = null; } } en Sat, 18 May 2013 12:46:12 GMT Sat, 18 May 2013 12:46:12 GMT Rev9