Merging two Windows.Data.Xml.Dom.XmlDocument objects in one - issue

Question

I am trying to merge two Windows.Data.Xml.Dom.XmlDocument objects into a single one, ie. i want to add all elements of 2nd object to the beginning of the 1st one.

To accomplish this I am using something like:

obj1.insertBefore(obj2Items[i], obj1Items[0]);

but I get "JavaScript runtime error: Validate failed because the node provided does not belong to this document."

Any ideas on this?

Thanx in advance

Answer 1

The error message is telling you precisely what the problem is: "the node provided does not belong to this document"

You cannot add a node that is not a child of the document.

Check out the documentation for this method and you will see: http://msdn.microsoft.com/en-us/library/windows/apps/windows.data.xml.dom.xmldocument.insertbefore.aspx

"newChild

Type: IXmlNode

The address of the new node to be inserted. The node passed here must be a valid child of the current XML DOM document node.

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Jeff Sanders (MSFT)

Answer 2

that makes sense.

but is there a way to merge 2 Windows.Data.Xml.Dom.XmlDocument objects?

Answer 3

Yes, iterate over the source XmlDocument and createElement on the target.  Then you can insert the copy of the node where ever you wish.

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Jeff Sanders (MSFT)