'<', hexadecimal value 0x3C, is an invalid attribute character. Line 21, position 29.

环境:win7 64位,vs2010

调试xslt，点击XML->Start XSLT Debugging,报错，

'<', hexadecimal value 0x3C, is an invalid attribute character. Line 21, position 29.

原错误代码：

        <xsl:if test="price < $bookAverage">

修改：

        <xsl:if test="price &lt; $bookAverage">

参考：http://www.cnblogs.com/LoveJenny/archive/2011/12/13/2285511.html