> I'd like to loop through all the children nodes under <Sample>, find those
> have non-empty value,

> And I need to assign this
> String to a variable since I need to use it elsewhere.

<xsl:variable name="x">
<xsl:for-each select="Sample/*[node()]">
<!-- one possible definition of "non empty", see the FAQ for alternatives
to [node()] -->
 <xsl:value-of select="."/>
 <xsl:if test="position()&lt;last()">,</xsl;if>
</xsl:for-each>
</xsl:variable>



David

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