xml . xquery数学表达式错误
本文关键字:表达式 错误 xquery xml | 更新日期: 2023-09-27 18:12:01
我是Microsoft.Xml的新手。XQuery,当我试图运行一个XQuery与数学表达式,如sum我有错误:不能应用添加到非整数数据。
XML:<book category="COOKING">
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
</book>
XQuery: for $item in document("xqt")/bookstore/book[price < '30']
return $item/year/text() + $item/year/text()
c#: XmlDocument doc1 = new XmlDocument();
doc1.LoadXml(rteXml.Text);
XQueryNavigatorCollection navCol = new XQueryNavigatorCollection();
navCol.AddNavigator(doc1.CreateNavigator(), "xqt");
XQueryExpression expr = new XQueryExpression(rteXQuery.Text.Trim().Replace("''n", " "));
XQueryNavigator nav = expr.Execute(navCol);
rteOutput.Text = nav.ToXml();
任何想法?
for $item in document("xqt")/bookstore/book[price < '30']
return sum($item/year/text(), $item/price/text())