hey i have a problem solving this xml :
<Arbre_Binaire>
−<One ID="1">
−<Two ID="2">
<Four ID="4"/>
<Five ID="5"/>
</Two>
−<Three ID="3">
−<Six ID="6">
<Eight ID="8"/>
<Nine ID="9"/>
</Six>
<Seven ID="7"/>
</Three>
</One>
</Arbre_Binaire>

i want to read it from parents to childrens the output must be: One Two Three Four Five Six Seven Eight Nine
and thx