[英]XML traversing using XmlDocument
I have the following code, which I use to traverse the XML: 我有以下代码,我用它来遍历XML:
private void btn_readXML_Click(object sender, EventArgs e)
{
var doc = new XmlDocument();
doc.Load("e:\\contacts.xml");
// Load xml document.
TraverseNodes(doc.ChildNodes);
}
static List<string> xmlnodes = new List<string>();
private static void TraverseNodes(XmlNodeList nodes)
{
foreach (XmlNode node in nodes)
{
List<string> temp = new List<string>();
temp.Add("Node name: " + node.Name.ToString());
XmlAttributeCollection xmlAttributes = node.Attributes;
foreach (XmlAttribute at in xmlAttributes)
{
temp.Add(" Atrib: " + at.Name + ": " + at.Value);
}
xmlnodes.AddRange(temp);
TraverseNodes(node.ChildNodes);
}
But my problem is, I don't want to traverse the whole document, I only want to traverse the node and subsequently its children which has an attribute 'X'. 但我的问题是,我不想遍历整个文档,我只想遍历节点,然后遍历具有属性“X”的子节点。 Please note that I don't know where the node is present. 请注意,我不知道节点在哪里。 So basically what I have to do is, find out if the node exists ( it'll have the attribute 'X'. That's how I identify its the right node) if yes then fetch its children. 所以基本上我要做的是,找出节点是否存在(它将具有属性'X'。这就是我如何识别它的正确节点)如果是,则获取它的子节点。
Can anyone help me out here? 有人可以帮我从这里出去吗? I'm pretty new to XMLs. 我是XML的新手。 Thanks is advance! 谢谢你提前!
Assuming your XML having following structure: 假设您的XML具有以下结构:
<Contacts>
<Contact X="abc">
<Child1></Child1>
</Contact>
<Contact X="def">
<Child2></Child2>
</Contact>
</Contacts>
Example code using XmlNode.SelectNodes : 使用XmlNode.SelectNodes的示例代码:
var doc = new XmlDocument();
doc.Load("e:\\contacts.xml");
//get root element of document
XmlElement root = doc.DocumentElement;
//select all contact element having attribute X
XmlNodeList nodeList = root.SelectNodes("//Contact[@X]");
//loop through the nodelist
foreach (XmlNode xNode in nodeList)
{
//traverse all childs of the node
}
For different XPath Queries see this link . 对于不同的XPath查询,请参阅此链接 。
UPDATE : 更新 :
If you want to select all elements having attribute X
in the document. 如果要在文档中选择具有属性X
所有元素。 No matters where they exists. 没有它们存在的问题。 You could use following: 您可以使用以下内容:
//select all elements in the doucment having attribute X
XmlNodeList nodeList = root.SelectNodes("//*[@X]");
Try this: 试试这个:
private void btn_readXML_Click(object sender, EventArgs e)
{
var doc = new XmlDocument();
doc.Load("e:\\contacts.xml");
var nodes = xdoc.SelectNodes("//yournodename");
// ex.
// var nodes = xdoc.SelectNodes("//Company");
TraverseNodes(nodes);
}
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