Autoscroll Listbox WPF needed

What I need is a sample to show the listbox scrolling. Must use Windows Presentation Foundation application type and use that type of listbox. For this sample; the width of it needs to be 150 and the height 200 Need the following code for the sample dim x as integer for x=11 to 99 [login to view URL] "test" & x next Needs a button with this code [login to view URL] = 35 [login to view URL]([login to view URL]) the line above ([login to view URL]) needs to change a little because currently; it scrolls to the item where it appears on the bottom. The item highlighted needs to appear on top. For the sample; if everything is fine; then the last full item shown would be test58 since test45 would be on top. However; if .SelectedIndex changes or the height changes; then needs to calculate accordingly. Another example is if the height was 185; then the last full item (on the bottom) would be test57 if clicking on the button. Cannot just have 100's of logic statements either. ## Deliverables The source code only to show the autoscrolling (where the item highlighted appears on top and not towards the bottom). ## Platform Windows XP