private void FirstCommentBtn_Click(object sender, RoutedEventArgs e)
{
if (CommentListView.Items.Count > 0)
{
CommentListView.ScrollIntoView(CommentListView.Items[0]);
}
}
private void LastCommentBtn_Click(object sender, RoutedEventArgs e)
{
var itemIndex = CommentListView.Items.Count - 1;
if (itemIndex > 0)
{
CommentListView.ScrollIntoView(CommentListView.Items[itemIndex]);
}
}