Here is my heirarchy...

<Tag0>
<Tag1>
<Tag2>Data</Tag2>
</Tag1>
<Tag1>
<Tag2>Data</Tag2>
</Tag1>
<Tag1>
<Tag2>Data</Tag2>
</Tag1>
</Tag0>

I need the Data combined under Tag1 separated by a comma like this...

<Tag0>
<Tag1>Data, Data, Data<Tag1>
<Tag0>
Here are some
I'm in the biz, but still learning.

Here is what I have now.
<xsl:template match="Tag1">
<xsl:copy>
<xsl:for-each select="Tag2">
<xsl:apply-templates select="."/>
<xsl:text>, </xsl:text>
</xsl:for-each>
</xsl:copy>
</xsl:template>

<xsl:template match="Tag2">
<xsl:apply-templates/>
</xsl:template>

From the example in the initial question, this give me...

<Tag0>
<Tag1>Data, </Tag1>
<Tag1>Data, </Tag1>
<Tag1>Data, </Tag1>
</Tag0>

I need it to be...

<Tag0>
<Tag1>Data, Data, Data</Tag1>
</Tag0>

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