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XNode.PreviousNode Property

Silverlight

Gets the previous sibling node of this node.

Namespace: System.Xml.Linq
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)

public XNode PreviousNode { get; }

Property Value

Type: System.Xml.Linq.XNode
The XNode that contains the previous sibling node.

Remarks

If this XNode does not have a parent, or if there is no previous node, this property returns null.

Examples

The following example uses this property to loop through nodes.


StringBuilder output = new StringBuilder();
XElement xmlTree = new XElement("Root",
    new XElement("Child1", 1),
    new XText("Some Text"),
    new XElement("Child2",
        2,
        new XElement("GrandChild", "GrandChild Content")
    ),
    new XComment("a comment"),
    new XElement("Child3")
);
XNode node = xmlTree.Element("Child2");
do
{
    StringBuilder sb = new StringBuilder();
    sb.Append(String.Format("NodeType: " + node.NodeType.ToString().PadRight(10)));
    switch (node.NodeType)
    {
        case XmlNodeType.Text:
            sb.Append((node as XText).Value);
            break;
        case XmlNodeType.Element:
            sb.Append((node as XElement).Name);
            break;
        case XmlNodeType.Comment:
            sb.Append((node as XComment).Value);
            break;
    }
    output.Append(sb.ToString() + Environment.NewLine);
}
while ((node = node.PreviousNode) != null);

OutputTextBlock.Text = output.ToString();