Find XPath from XmlNode - CSharp System.Xml

CSharp examples for System.Xml:XML Node

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Description

Find XPath from XmlNode

Demo Code


using System.Xml.Serialization;
using System.Xml;
using System.Text;
using System.IO;/*from  w  w w.ja va  2 s.  com*/
using System.Collections.Generic;
using System.Collections;
using System;

public class Main{
        static string FindXPath(XmlNode node)
        {
            StringBuilder builder = new StringBuilder();
            while( node != null )
            {
                switch( node.NodeType )
                {
                    case XmlNodeType.Attribute:
                    {
                        builder.Insert( 0, "/@" + node.Name );
                        node = ((XmlAttribute)node).OwnerElement;
                        break;
                    }
                    case XmlNodeType.Element:
                    {
                        int index = FindElementIndex( (XmlElement)node );
                        builder.Insert( 0, "/" + node.Name + "[" + index + "]" );
                        node = node.ParentNode;
                        break;
                    }
                    case XmlNodeType.Document:
                    {
                        return builder.ToString();
                    }
                    case XmlNodeType.Text:
                    {
                        node = node.ParentNode;
                        break;
                    }
                    //default:
                    //{
                    //   throw new ArgumentException( "Only elements and attributes are supported" );
                    //}
                }
            }
            throw new ArgumentException( "Node was not in a document" );
        }
}

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