Hi,
I am getting error "The reference node is not a child of this node" while using system.xml.It works fine for MSXML3.0.

aResponseDocument.DocumentElement.InsertBefore(oTe mpDOM.DocumentElement, oEmpNode)

kindly help me to find equilvalent in system.xml.

You've posted on the wrong forum - this area is for XSLT questions, whereas your problem is related to DOM.

I'm no expert on DOM but I think that if you do

a.InsertBefore(b ,c)

then b must be a child of a, and the message is telling you that it isn't (it's probably the same node as a)

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Could also be that you are trying to add a node from a different document. You need to use ImportNode for this, MSXML deviates from the spec in this regard. It suggests you use CloneNode but also allows direct usage in some scenarios.

--

Joe (Microsoft MVP - XML)