MoveToNamespace() 将XPathNavigator 移动到具有指定本地名称的命名空间节点。 MoveToNext() 移动到当前节点的下一个同级。 MoveToNextAttribute() 移动到下一个属性。 MoveToNextNamespace() 将XPathNavigator 移动到下一个命名空间节点。 MoveToParent() 移动到当前节点的父节点。 MoveToPrevious() 移动到当前节点的...
XPath - Selecting a Parent with ..Normally in an XPath expression, you have a string of elements separated by a slash. However, if you put two periods ".." where an element would normally go you can select the parent element. The element to the left of the double period will have ...
关于在XSLT和XQuery中使用XPath表达式定位节点的知识在后面的实例中会有所介绍。 在学习XPath之前你应该对XML的节点,元素,属性,原子值(文本),处理指令,注释,根节点(文档节点),命名空间以及对节点间的关系如:父(Parent),子(Children),兄弟(Sibling),先辈(Ancestor),后代(Descendant)等概念有所了解。这里不在说明。
}//--- move to attribute doesn't work backwards (no idea why)// update: because it cannot go from attribute to attribute with the use of//MoveToAttributemethod (in this case only MoveToNextAttribute can be used)nodeNavigator.MoveToParent(); nodeNavigator.MoveToFirstChild(); nodeNavigator.Mo...
To start off simply, let's just do lemonade first using an absolute path.Predicate XPath Expression: inventory/drink/lemonade[amount>15] Notice that the form of a predicate is: parent[child someTestHere] If we wanted to do this predicate on all the products we would use the wildcard ...
XmlNode node4= node1.SelectSingleNode("parent::*");//获取当前的节点的父节点Console.WriteLine(node4.Name);//输出 bookstoreConsole.WriteLine("---"); XmlNode node5= doc.SelectSingleNode("/bookstore/book[2]/title[1]");//选取第二个book的第一个title节点XmlNodeList nodelist5 = node5.SelectNod...
parent::*: Selects the parent if it matches. The '..' pattern from the core is equivalent to 'parent::node()'. ancestor::*: Selects matching ancestors. ancestor-or-self::*: Selects ancestors including the current node. self::*: Selects the current node. '.' is equivalent to 'sel...
//* # all elements count(//*) # count all elements (//h1)[1]/text() # text of the first h1 heading //li[span] # find a with an inside it # ...expands to //li[child::span] //ul/li/.. # use .. to select a parent # Find a parent...
This is true just like there is always more than one path to any destination. The key is to use the tag, attributes, content text, siblings, parent, or whatever helps you locate the target element in the HTML. To make things easier for you, here is a cheat sheet of helpful XPath ...
上面的XML文档中的节点例子: <bookstore>(文档节点)<author>J K. Rowling</author>(元素节点) lang="en" (属性节点) 节点关系 父(Parent) 子(Children) 同胞(Sibling) 先辈(Ancestor) 后代(Descendant) 路径表达式 下面列出了最有用的路径表达式: