我正在尝试找出为什么我的 xpath 不会选择我指定的节点
我的 xpath 表达式是//DefaultValue
,所以我希望选择名称 DefaultValue 的所有元素
我的测试文件(删减)是:
<?xml version="1.0" encoding="utf-8"?>
<SharedDataSet xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner" xmlns="http://schemas.microsoft.com/sqlserver/reporting/2010/01/shareddatasetdefinition">
<Description />
<DataSet Name="ddd">
<Query>
<DataSourceReference>xxx</DataSourceReference>
<DataSetParameters>
<DataSetParameter Name="p1">
<DefaultValue>baaaah</DefaultValue> <!-- this node should be selected eh? -->
</DataSetParameter>
<DataSetParameter Name="p2">
<DefaultValue>fooo</DefaultValue> <!-- this node should be selected too eh? -->
</DataSetParameter>
</DataSetParameters>
</Query>
</SharedDataSet>
代码是:
XmlNamespaceManager xn = new XmlNamespaceManager(new NameTable());
xn.AddNamespace("ns", "http://schemas.microsoft.com/sqlserver/reporting/2010/01/shareddatasetdefinition");
xn.AddNamespace("rd", "http://schemas.microsoft.com/SQLServer/reporting/reportdesigner");
xn.AddNamespace("cl", "http://schemas.microsoft.com/sqlserver/reporting/2010/01/componentdefinition");
XDocument document = XDocument.Parse(reportBuffer, LoadOptions.PreserveWhitespace);
IEnumerable<XElement> elements = document.XPathSelectElements(xpath, xn);
在此刻elements.Count() equals 0
谁能看到我表现出的愚蠢?
我似乎无法让 xml 恶魔高兴... :-(