To use a counter in a XSL For-Each block, you can use the position() function, the Counter starts at value 1.
<xsl:for-each select="Order/Products/Product">
<position><xsl:value-of select="position()"></xsl:value-of></position>
</xsl:for-each>
see also MSDN position Function
Since XSL 1.0 dows not have inbuild Trimming functions for Strings, you need to define your own templates.
You can use the Trim Templates shown in the codesnippet below.
<xsl:variable name="whitespaceCharacters" select="'	 '" />
<!-- Trim Right side of the String -->
<xsl:template name="TrimRight">
<xsl:param name="input" />
<xsl:param name="trim" select="$whitespaceCharacters" />
<xsl:variable name="length" select="string-length($input)" />
<xsl:if test="string-length($input) > 0">
<xsl:choose>
<xsl:when test="contains($trim, substring($input, $length, 1))">
<xsl:call-template name="TrimRight">
<xsl:with-param name="input" select="substring($input, 1, $length - 1)" />
<xsl:with-param name="trim" select="$trim" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$input" />
</xsl:otherwise>
</xsl:choose>
</xsl:if>
</xsl:template>
<!-- Trim Left side of the String -->
<xsl:template name="TrimLeft">
<xsl:param name="input" />
<xsl:param name="trim" select="$whitespaceCharacters" />
<xsl:if test="string-length($input) > 0">
<xsl:choose>
<xsl:when test="contains($trim, substring($input, 1, 1))">
<xsl:call-template name="TrimLeft">
<xsl:with-param name="input" select="substring($input, 2)" />
<xsl:with-param name="trim" select="$trim" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$input" />
</xsl:otherwise>
</xsl:choose>
</xsl:if>
</xsl:template>
<!-- Trim both sides of the String -->
<xsl:template name="Trim">
<xsl:param name="input" />
<xsl:param name="trim" select="$whitespaceCharacters" />
<xsl:call-template name="TrimRight">
<xsl:with-param name="input">
<xsl:call-template name="TrimLeft">
<xsl:with-param name="input" select="$input" />
<xsl:with-param name="trim" select="$trim" />
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name="trim" select="$trim" />
</xsl:call-template>
</xsl:template>
To get element with the highest ID using XSL you can use the following snippet.
XML:
<rootnode>
<node>
<id>3</id>
</node>
<node>
<id>2</id>
</node>
<node>
<id>1</id>
</node>
<node>
<id>5</id>
</node>
<node>
<id>4</id>
</node>
</rootnode>
XSL:
<xsl:variable name="MaxNodeId"><xsl:value-of select="/rootnode/node[not(/rootnode/node/id > id)]/id"/></xsl:variable>
To create a newline using XSL Text you can use the following snippet.
<xsl:text>
</xsl:text>
To check if String is Null or Empty in XSL you can use the following snippet.
<xsl:choose>
<xsl:when test="fieldToTest != ''">
<xsl:value-of select="Field1Value" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="Field2Value" />
</xsl:otherwise>
</xsl:choose>
To do String Replace in XSL 1.0 you can use the following snippet.
<xsl:template name="StringReplace">
<xsl:param name="input" />
<xsl:param name="search" />
<xsl:param name="replace" />
<xsl:choose>
<xsl:when test="contains($input, $search)">
<xsl:value-of select="substring-before($input,$search)" />
<xsl:value-of select="$replace" />
<xsl:call-template name="StringReplace">
<xsl:with-param name="input"
select="substring-after($input,$search)" />
<xsl:with-param name="search" select="$search" />
<xsl:with-param name="replace" select="$replace" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$input" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
The Template can be invoked as:
<xsl:variable name="newInput">
<xsl:call-template name="StringReplace">
<xsl:with-param name="input" select="$input" />
<xsl:with-param name="search" select="string1" />
<xsl:with-param name="replace" select="string2" />
</xsl:call-template>
</xsl:variable>