XElement.DescendantsAndSelf 方法

返回经过筛选的元素集合，这些元素包含此元素以及此元素的所有子代元素，并按文档顺序排列它们。Returns a filtered collection of elements that contain this element, and all descendant elements of this element, in document order. 集合中仅包括具有匹配 XName 的元素。Only elements that have a matching XName are included in the collection.

public:
 System::Collections::Generic::IEnumerable<System::Xml::Linq::XElement ^> ^ DescendantsAndSelf(System::Xml::Linq::XName ^ name);

public System.Collections.Generic.IEnumerable<System.Xml.Linq.XElement> DescendantsAndSelf (System.Xml.Linq.XName name);

member this.DescendantsAndSelf : System.Xml.Linq.XName -> seq<System.Xml.Linq.XElement>

Public Function DescendantsAndSelf (name As XName) As IEnumerable(Of XElement)

参数

返回

示例

下面的示例创建一个 XML 树，然后使用此树。The following example creates an XML tree, and then uses this .

XElement xmlTree = new XElement("Root",  
    new XAttribute("Att1", "AttributeContent"),  
    new XElement("Child",  
        new XText("Some text"),  
        new XElement("GrandChild", "element content")  
    )  
);  
IEnumerable<XElement> das = xmlTree.DescendantsAndSelf("Child");  
foreach (XElement el in das)  
    Console.WriteLine(el.Name);  

Dim xmlTree As XElement = _  
    <Root Att1="AttributeContent">  
        <Child>Some text  
            <GrandChild>element content</GrandChild>  
        </Child>  
    </Root>  
  
Dim das As IEnumerable(Of XElement) = xmlTree.DescendantsAndSelf("Child")  
  
For Each el In das  
    Console.WriteLine(el.Name)  
Next  

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

Child  

注解

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

另请参阅

• LINQ to XMLLINQ to XML

返回元素的集合，而这些元素包含此元素以及此元素的所有子代元素，并按文档顺序排列它们。Returns a collection of elements that contain this element, and all descendant elements of this element, in document order.

public:
 System::Collections::Generic::IEnumerable<System::Xml::Linq::XElement ^> ^ DescendantsAndSelf();

public System.Collections.Generic.IEnumerable<System.Xml.Linq.XElement> DescendantsAndSelf ();

member this.DescendantsAndSelf : unit -> seq<System.Xml.Linq.XElement>

Public Function DescendantsAndSelf () As IEnumerable(Of XElement)

返回

示例

下面的示例创建一个 XML 树，然后使用此树。The following example creates an XML tree, and then uses this .

XElement xmlTree = new XElement("Root",  
    new XAttribute("Att1", "AttributeContent"),  
    new XElement("Child",  
        new XText("Some text"),  
        new XElement("GrandChild", "element content")  
    )  
);  
IEnumerable<XElement> das =  
    from el in xmlTree.DescendantsAndSelf()  
    select el;  
foreach (XElement el in das)  
    Console.WriteLine(el.Name);  

Dim xmlTree As XElement = _  
    <Root Att1="AttributeContent">  
        <Child>Some text  
            <GrandChild>element content</GrandChild>  
        </Child>  
    </Root>  
  
Dim das As IEnumerable(Of XElement) = _  
    From el In xmlTree.DescendantsAndSelf() _  
    Select el  
  
For Each el In das  
    Console.WriteLine(el.Name)  
Next  

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

Root  
Child  
GrandChild  

注解

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

另请参阅

• LINQ to XMLLINQ to XML