XContainer.DescendantNodes 方法

定義

依照文件順序,傳回這個文件或項目之子代節點的集合。Returns a collection of the descendant nodes for this document or element, in document order.

public:
 System::Collections::Generic::IEnumerable<System::Xml::Linq::XNode ^> ^ DescendantNodes();
public System.Collections.Generic.IEnumerable<System.Xml.Linq.XNode> DescendantNodes ();
member this.DescendantNodes : unit -> seq<System.Xml.Linq.XNode>
Public Function DescendantNodes () As IEnumerable(Of XNode)

傳回

IEnumerable<T>XNode,包含 XContainer 的子代節點 (依照文件順序)。An IEnumerable<T> of XNode containing the descendant nodes of the XContainer, in document order.

範例

下列範例會建立 XML 樹狀結構,然後逐一查看DescendantNodes軸。The following example creates an XML tree, and then iterates through the DescendantNodes axis.

XElement xmlTree = new XElement("Root",  
    // Attributes are not nodes, so will not be returned by DescendantNodes.  
    new XAttribute("Att1", "AttributeContent"),  
    new XElement("Child",  
        new XElement("GrandChild", "element content")  
    )  
);  
IEnumerable<XNode> dnas =  
    from node in xmlTree.DescendantNodes()  
    select node;  
foreach (XNode node in dnas)  
{  
    if (node is XElement)  
        Console.WriteLine((node as XElement).Name);  
    else  
        Console.WriteLine(node);  
}  
' Attributes are not nodes, so will not be returned by DescendantNodes.  
Dim xmlTree As XElement = _   
    <Root Att1="AttributeContent">  
        <Child>  
            <GrandChild>element content</GrandChild>  
        </Child>  
    </Root>  
  
Dim dnas = From node In xmlTree.DescendantNodes _  
           Select node  
  
For Each node In dnas  
    If TypeOf node Is XElement Then  
        Console.WriteLine(DirectCast(node, XElement).Name)  
    Else  
        Console.WriteLine(node)  
    End If  
Next  

這個範例會產生下列輸出:This example produces the following output:

Child  
GrandChild  
element content  

備註

請注意,屬性不會視為中LINQ to XMLLINQ to XML的節點,因此不會成為此方法所傳回之集合的一部分。Note that attributes are not considered to be nodes in LINQ to XMLLINQ to XML, so they will not be part of the collection that is returned by this method.

這個方法會使用延後的執行。This method uses deferred execution.

適用於

另請參閱