group nodes based on predicates in xpath string

[tsbalaji69]

I am populating a xmldocument and only if the selectsinglenod e of the given path exist i try to clone. I do this to accommodate same name tags. The issue in which i got stuck is I am able to build the xml with accommodating same name tags but i am unable to group them because logically it appends to the parent. I need a way to figure out to differentiate the same name tags in the xpath string and group them. e.g
if i have a list of xpath strings like this
Code:

root/parent/one
root/parent/two
root/parent/three
root/parent/one
root/parent/two
root/parent/three
root/parent/one
root/parent/two
root/parent/three

i am able to get the xmldocument build which is like this
Code:

<root>
 <parent>
   <one/>
   <two/>
   <three/>
   <one/>
   <two/>
   <three/>
   <one/>
   <two/>
  <three/>
 </parent>
</root>

if i have some index in the xpath string something like this
Code:

root/parent/one
root/parent/two
root/parent/three
root/parent/one[2]
root/parent/two[2]
root/parent/three[2]
root/parent/one[3]
root/parent/two[3]
root/parent/three[3]

I need to group them like this
Code:

<root>
 <parent>
    <one/>
    <two/>
    <three/>
 </parent>
 <parent>
    <one/>
    <two/>
    <three/>
 </parent>
 <parent>
    <one/>
    <two/>
    <three/>
 </parent>
</root>

can this be done using appendchild method in c# to group based on the predicate index or any other method
thank you

[Anas Mosaad]

Hi there,

This a sample XSLT template that does what you need. Not sure how you can integrate this with C#, but this is the core part - the XSLT/XPath part.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
<xsl:output method="xml" indent="yes"/>

<xsl:template match="/root/parent">
	<xsl:variable name="p" select="count(../parent/*) div 3"></xsl:variable>
	<root>
	<xsl:if test="$p &gt; 0">
		<xsl:call-template name="oneGroup">
			<xsl:with-param name="pos" select="1"></xsl:with-param>
			<xsl:with-param name="_count" select="$p"></xsl:with-param>
		</xsl:call-template>
	</xsl:if>
	</root>
</xsl:template>

<xsl:template name="oneGroup">
	<xsl:param name="pos"></xsl:param>
	<xsl:param name="_count"></xsl:param>
	<parent>
		<xsl:copy-of select="one[$pos]"></xsl:copy-of>
		<xsl:copy-of select="two[$pos]"></xsl:copy-of>
		<xsl:copy-of select="three[$pos]"></xsl:copy-of>
	</parent>
	<xsl:if test="$pos &lt; $_count">
		<xsl:call-template name="oneGroup">
			<xsl:with-param name="pos" select="$pos + 1"></xsl:with-param>
			<xsl:with-param name="_count" select="$_count"></xsl:with-param>
		</xsl:call-template>
	</xsl:if>
</xsl:template>

</xsl:stylesheet>

[tsbalaji69]

Thank you very much anas for a pointer to do this. I got to do this in c#. will try if i can transform xsl code using c#
thank you