<?xml version="1.0" encoding="utf-8" ?>
<Tables>
<Column col1="c1" col2="c2" col3="c3"></validate>
<Column col1="s1" col2="s2" col3="s3"></validate>
</Tables>
call xml file frm codebehind and add in dictionary.
In dictionary key shd be c1 or s1
value=c2 and c3 or s2 and s3