UWP TextBox滚动至末尾

 1 private void TextBoxScrollToEnd(TextBox textBox){
 2     var grid = (Grid)VisualTreeHelper.GetChild(textBox, 0); 
 3     for (var i = 0; i <= VisualTreeHelper.GetChildrenCount(grid) - 1; i++) 
 4     { 
 5             object obj = VisualTreeHelper.GetChild(grid, i); 
 6             if (!(obj is ScrollViewer)) continue; 
 7             ((ScrollViewer)obj).ChangeView(0.0f, ((ScrollViewer)obj).ExtentHeight, 1.0f); 
 8             break; 
 9         } 
10     }
11 }