XNode.NodesBeforeSelf Método

Definição

Retorna uma coleção de nós irmãos antes deste nó, na ordem do documento.Returns a collection of the sibling nodes before this node, in document order.

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

Retornos

IEnumerable<XNode>

Um IEnumerable<T> de XNode de nós irmãos antes desse nó, na ordem do documento.An IEnumerable<T> of XNode of the sibling nodes before this node, in document order.

Exemplos

O exemplo a seguir cria uma árvore XML e, em seguida, consulta a árvore usando esse método de eixo.The following example creates an XML tree, and then queries the tree using this axis method.

XElement xmlTree = new XElement("Root",  
    new XText("Text content."),  
    new XElement("Child1", "child1 content"),  
    new XElement("Child2", "child2 content"),  
    new XText("More text content."),  
    new XElement("child3", "child3 content")  
);  
XElement child = xmlTree.Element("Child2");  
IEnumerable<XNode> nodes =  
    from node in child.NodesBeforeSelf()  
    select node;  
foreach (XNode node in nodes)  
    Console.WriteLine("Node type: {0}  {1}",  
        node.NodeType,  
        node.NodeType == XmlNodeType.Text ? (node as XText).Value : "");  
Dim xmlTree As XElement = New XElement("Root", _  
    New XText("Text content."), _  
    New XElement("Child1", "child1 content"), _  
    New XElement("Child2", "child2 content"), _  
    New XText("More text content."), _  
    New XElement("child3", "child3 content") _  
)  

Dim child As XElement = xmlTree.Element("Child2")  
Dim nodes As IEnumerable(Of XNode) = _  
    From node In child.NodesBeforeSelf() _  
    Select node  
For Each node As XNode In nodes  
    Dim s As String = ""  
    If node.NodeType = XmlNodeType.Text Then  
        s = DirectCast(node, XText).Value  
    End If  
    Console.WriteLine("Node type: {0}  {1}", node.NodeType, s)  
Next  

Esse exemplo gera a saída a seguir:This example produces the following output:

Node type: Text  Text content.  
Node type: Element  

Comentários

Esse método inclui apenas irmãos na coleção retornada.This method only includes siblings in the returned collection. Ele não inclui descendentes.It does not include descendants.

Este método utiliza execução adiada.This method uses deferred execution.

Aplica-se a