[英]Unable select XmlNode by Xpath with two attributes
I have xml as a response, need to find marked red arrow node:我有 xml 作为响应,需要找到标记的红色箭头节点:
My code:我的代码:
//response to xmlDocument
document = new XmlDocument();
document.LoadXml(response.Content);
XmlNamespaceManager ns = new XmlNamespaceManager(document.NameTable);
foreach (XmlAttribute curAttribute in document.DocumentElement.Attributes)
{
if (curAttribute.Prefix.Equals("xmlns"))
{ ns.AddNamespace(curAttribute.LocalName, curAttribute.Value); }
}
string xpath = "//edmx:Edmx/edmx:DataServices/Schema[@Namespace='Core.Entities']/EntityType[@Name='Office']/Property[@Name='OfficeKeyNumeric']";
XmlNode node = document.SelectSingleNode(xpath, ns);
}
I have an error that node can't be found by given XPath, node is null.我有一个错误,给出的 XPath 找不到节点,节点是 null。
What I tried:我尝试了什么:
with and
and
string xpath = "//edmx:Edmx/edmx:DataServices/Schema[@Namespace='Core.Entities' and @xmlns='http://docs.oasis-open.org/odata/ns/edm']/EntityType[@Name='Office']/Property[@Name='OfficeKeyNumeric']";
without and
没有and
string xpath = "//edmx:Edmx/edmx:DataServices/Schema[@Namespace='Core.Entities'][@xmlns='http://docs.oasis-open.org/odata/ns/edm']/EntityType[@Name='Office']/Property[@Name='OfficeKeyNumeric']";
Tried also with pipe |
也试过 pipe |
, &
- nothing helped. , &
- 没有任何帮助。
Why it doesn't work and is it possible to make it work in that way?为什么它不起作用,是否有可能让它以这种方式工作?
The only one working solution I'm using now is to remove xmlns="http://docs.oasis-open.org/odata/ns/edm"
from XML document before loading, after that my code above works fine.我现在使用的唯一一个可行的解决方案是在加载之前从 XML 文档中删除xmlns="http://docs.oasis-open.org/odata/ns/edm"
,之后我上面的代码可以正常工作。
document.LoadXml(response.Content.Replace("xmlns=\"http://docs.oasis-open.org/odata/ns/edm\"", ""));
The Schema
element and its descendants are declared in the http://docs.oasis-open.org/odata/ns/edm
namespace, which must be referenced in the xpath
statement you are looking for. Schema
元素及其后代在http://docs.oasis-open.org/odata/ns/edm
命名空间中声明,必须在您正在查找的xpath
语句中引用。
string xpath = "//edmx:Edmx/edmx:DataServices/edm:Schema[@Namespace='Core.Entities']/edm:EntityType[@Name='Office']/edm:Property[@Name='OfficeKeyNumeric']";
Make sure to have your XmlNamespaceManager
initialized with these namespaces.确保使用这些命名空间初始化您的XmlNamespaceManager
。
XmlNamespaceManager ns = new XmlNamespaceManager(document.NameTable);
ns.AddNamespace("edmx","http://docs.oasis-open.org/odata/ns/edmx");
ns.AddNamespace("edm","http://docs.oasis-open.org/odata/ns/edm");
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