带有名称空间的XPathSelectElement返回错误-希望在任何深度读取元素 [英] XPathSelectElement with namespace return error - want to read element at any depth

问题描述

XML:

XML:

<response xmlns="abc">
	<errors>
		<error>Authentication failed</error>
	</errors>
</response>

代码:

Code:

XNamespace ns = "abc";
XmlNamespaceManager namespaceManager = new XmlNamespaceManager(new NameTable());
namespaceManager.AddNamespace(string.Empty, "abc");
string err = XDOC.Element(ns + "response").XPathSelectElement("errors/error", namespaceManager).Value;

但它给我错误对象引用未设置为对象实例"

请帮忙.

如果我使用的话，它工作正常，
字符串err = XDOC.Element(ns +"response").Element(ns +"errors").Element(ns +"error").Value;

但我想使用XPathSelectElement.

在此先感谢..

but it gives me error "object reference not set to instance of an object"

please help.

it working fine if i used,
string err = XDOC.Element(ns + "response").Element(ns + "errors").Element(ns+"error").Value;

but i want to use XPathSelectElement.

thanks in advance..

推荐答案

XDOC.Element(ns + "response").XPathSelectElement("errors/error", namespaceManager).Value;

XDOC.Element(ns +"response")为空.
我似乎不明白为什么需要ns +"response".

Try XDOC.Element("response"),

XDOC.Element(ns + "response").XPathSelectElement("errors/error", namespaceManager).Value;

XDOC.Element(ns + "response") is null.
I dont seem to understand why ns + "response" is required.

Try XDOC.Element("response"),

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