XLSX- how to get rid of the default namespace prefix x:?

Question

I'm generating XLSX spreadsheet using OOXML SDK, and I need to get rid of x: namespace prefix. How can I achieve this?

using (SpreadsheetDocument doc = SpreadsheetDocument.Open("template.xlsx", true))
            {
                //Save the shared string table part
                if (doc.WorkbookPart.GetPartsOfType().Count() > 0)
                {
                    SharedStringTablePart shareStringPart = 
                                       doc.WorkbookPart.GetPartsOfType().First();
                    shareStringPart.SharedStringTable.Save();
                }

                //Save the workbook
                doc.WorkbookPart.Workbook.Save();
}

Here, the original XLSX file is coming from Excel 2007 and doesn't have the prefix, however, after the save operation the prefix appears. How can I avoid that?

Answer 1

Here is a modified version of the stylesheet linked by divo that strips only a single namespace and copies the rest verbatim:

<xsl:stylesheet version="1.0" xmlns:x="namespace-to-strip" 
       xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="no" encoding="UTF-8"/>

  <xsl:template match="/|comment()|processing-instruction()">
    <xsl:copy>
      <xsl:apply-templates/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="x:*">
    <xsl:element name="{local-name()}">
      <xsl:apply-templates select="@*|node()"/>
    </xsl:element>
  </xsl:template>

  <xsl:template match="@x:*">
    <xsl:attribute name="{local-name()}">
      <xsl:value-of select="."/>
    </xsl:attribute>
  </xsl:template>

  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>