xaml - Context-sensitive data binding in WPF -

it's convenient assign listbox.itemssource collection , tweak listbox.itemtemplate make date want.

consider binding simple list of sorted strings.
if collection large enough, eye-catching anchors come handy.

here concept of want:
wpf example of databinding http://bteffective.com/images/data_bindining_example.png

basically want first letter of different style, if doesn't match letter of previous item. how can address previous item in datatemplate?

you need parse source list new list of objects have 3 properties: first letter of word, rest of word, , boolean indicates if entry "anchor". then, datatemplate textblock first letter followed textblock rest of word. style trigger on isanchor boolean change color of first letter.