private void EditRemote_Tapped(object sender, TappedRoutedEventArgs e)
        {
            var url = "http://imgstore.cdn.sogou.com/app/a/100540002/714860.jpg";


            // create instance and show it
            ImageEditorControl editor = new ImageEditorControl();

            editor.Show(new Uri(url));

            //register event to get edited image
            editor.ImageEditedCompleted += (image_edited) =>
            {
                image.Source = image_edited;
            };
        }
        private async void EditLocal_Tapped(object sender, TappedRoutedEventArgs e)
        {
            FileOpenPicker fo = new FileOpenPicker();

            fo.FileTypeFilter.Add(".png");
            fo.FileTypeFilter.Add(".jpg");
            fo.SuggestedStartLocation = PickerLocationId.Desktop;

            var f = await fo.PickSingleFileAsync();

            if (f != null)
            {
                // create instance and show it
                ImageEditorControl editor = new ImageEditorControl();
                editor.Show(f);

                //register event to get edited image
                editor.ImageEditedCompleted += (image_edited) =>
                {
                    image.Source = image_edited;
                };
            }
        }