Hi Madha Dhanasekar,

    Besides LINQ-to-XML, you can also use XpathNavigator class to navigate into your xml. I have written a sample block for you. Please have a look, may be helpful..

protected string SearchChildNodeByParentNode()
        {
            string output = String.Empty;
            XmlDocument _ObjXmldocument = new XmlDocument();
            _ObjXmldocument.Load(Server.MapPath("~/XML/GetChild NodeByParent.xml"));

            XPathNavigator _objXpathNavigator = _ObjXmldocument.CreateNavigator();
            _objXpathNavigator.MoveToRoot();
            _objXpathNavigator.MoveToFirstChild();

            do
            {
                if (_objXpathNavigator.NodeType == XPathNodeType.Element)
                {
                    if (_objXpathNavigator.HasChildren)
                    {
                        _objXpathNavigator.MoveToFirstChild();
                        output += _objXpathNavigator.Name + " ";
                    }
                }
            } while (_objXpathNavigator.MoveToNext());

            return output;
        }