parsing list of childmost nodes in XML

[sspost]

have an XML:



<Main>



<CoreList>

<Element>A</Element>

<AllowValue>

<Display>AF04 </Display>

</AllowValue>

</CoreList>


<CoreList>

<Element>B</Element>

<AllowValue>

<Display>BF01 </Display>

</AllowValue>

<AllowValue>

<Display>BF04 </Display>

</AllowValue>

<AllowValue>

<Display>BF07 </Display>

</AllowValue>

<AllowValue>

<Display>BF09 </Display>

</AllowValue>

</CoreList>


</Main>

I want to parse all the "AllowValue/Display" in the CoreList node where corelist text = "B" ...how can I do that?