Parsing of XML data [DOM traversal] Articles, samples and tutorials

Parsing of XML data [DOM traversal]

Posted Date: 15-Jun-2004	Category: .NET Framework
Author: Shajan	Member Level: Silver	Points: 7

This code snippet shows how to traverse the XML DOM and find out theattributes and values. This snippet uses the for(..) loop for traversal. The attribute ..Attributes.Item(0).. is the first attribute, ..Attributes.Item(1).. is the second attribute and so on...


XmlDocument xDoc=new XmlDocument(); //create an instance of the XML Document
try 
{
	xDoc.Load(path);  //get the XML data from the file
	XmlNode XNodeParentNode= xDoc.SelectSingleNode("//ParentNodeName"); //start - parsing the XML data //Get the parent Node

	int NodeCnt=0;
	int ChildNodeCnt=0;
	int SuperChildNodeCnt=0;

	XmlNode XNodeChildNode;
	XmlNode XNodeSuperChildNode;
//traverse all the child nodes of the selected parent node
	for(NodeCnt=0;NodeCnt<XNodeParentNode.ChildNodes.Count;NodeCnt++)
	{
		XNodeChildNode=XNodeParentNode.ChildNodes.Item(NodeCnt);
//this is the immediate child nodes
		//do something
		Response.Write(XNodeChildNode.Attributes.Item(2).Value);
//getting the attribute value of the child node at a given index
		if(XNodeChildNode.Attributes.Item(3).Value=="0")
		{
			//checking for some value
			XNodeSuperChildNode=XNodeChildNode.ChildNodes.Item(0);
//this is the second level child nodes of the selected parent node
			if(XNodeSuperChildNode.Attributes.Item(3).Value!="1") 
			{
				//do some thing
				Response.Write("<font color=red>*</font>");
			}
		}
		for(ChildNodeCnt=0;ChildNodeCnt<XNodeParentNode.ChildNodes.Count;ChildNodeCnt++)
		{
			XNodeSuperChildNode=XNodeChildNode.ChildNodes.Item(ChildNodeCnt);
//this is the superchild nodes of the selected parent node
				
			//do something
			Response.Write(XNodeSuperChildNode.Attributes.Item(2).Value);
		}
	}
}
catch(Exception ex)
{
	//error trapping code
}

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Parsing of XML data [DOM traversal]

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