程序代码（看着比较乱的话，可以下载附件code.cs文件）：

  private void CreateStylesheet(XmlTextWriter writer, string[] sHeaders, string[] sFileds, ExportFormat FormatType)
  {
   try
   {
    // xsl:stylesheet
    string ns = "http://www.w3.org/1999/XSL/Transform"; 
    writer.Formatting = Formatting.Indented;
    writer.WriteStartDocument( );    
    writer.WriteStartElement("xsl","stylesheet",ns);
    writer.WriteAttributeString("version","1.0");
    writer.WriteStartElement("xsl:output");
    writer.WriteAttributeString("method","text");
    writer.WriteAttributeString("version","4.0");
    writer.WriteEndElement( );
    
    // xsl-template
    writer.WriteStartElement("xsl:template");
    writer.WriteAttributeString("match","/");

    // xsl:value-of for headers
    for(int i=0; i< sHeaders.Length; i++)
    {
                    writer.WriteString("\"");
                    //writer.WriteString("\r\n"); 
     writer.WriteStartElement("xsl:value-of");
     writer.WriteAttributeString("select", "'" + sHeaders[i] + "'");
                    //writer.WriteAttributeString("select", "'" + sHeaders[i] + "'");
     writer.WriteEndElement( ); // xsl:value-of
                    writer.WriteString("\"");
                    
     if (i != sFileds.Length - 1) writer.WriteString( (FormatType == ExportFormat.CSV ) ? "," : " " );
    }
    // xsl:for-each
    writer.WriteStartElement("xsl:for-each");
    writer.WriteAttributeString("select","Export/Values");
    writer.WriteString("\r\n");    
    
    // xsl:value-of for data fields
    for(int i=0; i< sFileds.Length; i++)
    {
                    writer.WriteString("\"");
                    //writer.WriteString("\r\n"); 
     writer.WriteStartElement("xsl:value-of");
     writer.WriteAttributeString("select", sFileds[i]);
     writer.WriteEndElement( ); // xsl:value-of
                    writer.WriteString("\"");
                    
     if (i != sFileds.Length - 1) writer.WriteString( (FormatType == ExportFormat.CSV ) ? "," : " " );
    }
    writer.WriteEndElement( ); // xsl:for-each
    writer.WriteEndElement( ); // xsl-template
    writer.WriteEndElement( ); // xsl:stylesheet
    writer.WriteEndDocument( );     
   }
   catch(Exception Ex)
   {
    throw Ex;
   }
  }

应用该XLST后，效果如下：
"序号","特征名称"
关键是我不希望有“”的存在，要是
序号,特征名称
就好了！
针对这个XLST咋改，好心人给个答复！