Extensions.Nodes<T>(IEnumerable<T>) 方法

定义

返回源集合中每个文档和元素的子节点集合。Returns a collection of the child nodes of every document and element in the source collection.

public:
generic <typename T>
 where T : System::Xml::Linq::XContainer[System::Runtime::CompilerServices::Extension]
 static System::Collections::Generic::IEnumerable<System::Xml::Linq::XNode ^> ^ Nodes(System::Collections::Generic::IEnumerable<T> ^ source);
public static System.Collections.Generic.IEnumerable<System.Xml.Linq.XNode> Nodes<T> (this System.Collections.Generic.IEnumerable<T> source) where T : System.Xml.Linq.XContainer;
static member Nodes : seq<'T (requires 'T :> System.Xml.Linq.XContainer)> -> seq<System.Xml.Linq.XNode> (requires 'T :> System.Xml.Linq.XContainer)
<Extension()>
Public Iterator Function Nodes(Of T As XContainer) (source As IEnumerable(Of T)) As IEnumerable(Of XNode)

类型参数

T

source 中对象的类型,被约束为 XContainerThe type of the objects in source, constrained to XContainer.

参数

source
IEnumerable<T>

一个包含源集合的 IEnumerable<T>XNodeAn IEnumerable<T> of XNode that contains the source collection.

返回

源集合中每个文档和元素的子节点的 IEnumerable<T>XNodeAn IEnumerable<T> of XNode of the child nodes of every document and element in the source collection.

示例

下面的示例检索名称为的Child元素集合中的每个节点的所有子节点。The following example retrieves all of the child nodes for every node in a collection of elements with the name of Child.

XElement xmlTree = XElement.Parse(  
    @"<Root><Child>aaa<GrandChild>Text</GrandChild>bbb</Child>" +  
    @"<Child>ccc<GrandChild>Text</GrandChild>ddd</Child></Root>");  
IEnumerable<XNode> nodes = xmlTree.Elements("Child").Nodes();  
  
foreach (XNode node in nodes)  
{  
    switch (node.NodeType)  
    {  
        case XmlNodeType.Element:  
            Console.WriteLine("Element: {0}", ((XElement)node).Name);  
            break;  
        case XmlNodeType.Text:  
            Console.WriteLine("Text: {0}", ((XText)node).Value);  
            break;  
    }  
}  
Dim xmlTree As XElement = _  
    <Root>  
        <Child>aaa<GrandChild>Text</GrandChild>bbb</Child>  
        <Child>ccc<GrandChild>Text</GrandChild>ddd</Child>  
    </Root>  
  
Dim nodes = xmlTree.<Child>.Nodes()  
  
' Note that XNode uses XmlNodeType, which is in the System.Xml namespace.  
For Each node As XNode In nodes  
    Select Case node.NodeType  
        Case XmlNodeType.Element  
            Console.WriteLine("Element: {0}", DirectCast(node, XElement).Name)  
        Case XmlNodeType.Text  
            Console.WriteLine("Text: {0}", DirectCast(node, XText).Value)  
    End Select  
Next  
  

该示例产生下面的输出:This example produces the following output:

Text: aaa  
Element: GrandChild  
Text: bbb  
Text: ccc  
Element: GrandChild  
Text: ddd  

注解

此方法使用延迟执行。This method uses deferred execution.

适用于

另请参阅