Ask for xmlelement copy method

[Steven.Xu]

Hello everyone.
I have two instance of xml.xmldocument . One is XA another is XB. XA has a
child node XA1. XA1 has many attributes and child nodes. Now I want to copy
XA1 to XB with all of it's attributes and child nodes. In .NET, the type of
XA1 is xml.xmlelement.
If I use clone method. The copy of XA1 is belong to XA. I can not append it
to XB.
If I careate a new instance from XB.CreateElemen t method. I need to copy
every attribute of XA1 to the new xml.xmlelement instance. The XA1.InnerXML
property just return the child nodes of XA1, and the XA1.OuterXML is
readonly. I can not send it to the new instance.
Who know how can i copy XA1 to XB easily and efficiently. Thanks.

Steven

[Oleg Tkachenko [MVP]]

Steven.Xu wrote:

I have two instance of xml.xmldocument . One is XA another is XB. XA has a
child node XA1. XA1 has many attributes and child nodes. Now I want to copy
XA1 to XB with all of it's attributes and child nodes. In .NET, the type of
XA1 is xml.xmlelement.

Take a look at XmlDocument.Imp ortNode() method.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Steven.Xu]

> Take a look at XmlDocument.Imp ortNode() method.

Thanks for your help. but i said that the type of the instance which i want
to copy is xml.xmlelement. Not xml.xmldocument . So it's not have the
ImportNode method. Do you have another way? Thanks again!

[Derek Harmon]

"Steven.Xu" <St******@discu ssions.microsof t.com> wrote in message news:70******** *************** ***********@mic rosoft.com...

Take a look at XmlDocument.Imp ortNode() method.

Thanks for your help. but i said that the type of the instance which i want
to copy is xml.xmlelement. Not xml.xmldocument . So it's not have the
ImportNode method. Do you have another way? Thanks again!

The reason AppendChild( ) the deep-cloned XmlElement of 'XA1' to
'XB' is because the cloned node, like the original, is "owned" by
XmlDocument 'XA.' The ImportNode( ) method allows developers
to change the ownership of the node when moving nodes between
two documents.

By calling ImportNode( ) on 'XB' to change the ownership of the cloned
node from 'XA' to 'XB', you will then be able to AppendChild( ) the node
that has been imported to 'XB'. Here's an example,

XmlDocument XA = new XmlDocument( );
XA.Load( "yesterdaysLog. xml");
XmlDocument XB = new XmlDocument( );
XB.Load( "todaysLog.xml" );

XmlElement XA1 = XA.DocumentElem ent.FirstChild;
XmlElement XA1Clone = XA1.CloneNode( true);
XmlElement XB1 = XB.ImportNode( XA1Clone);

// Works as expected after the cloned element has been imported into XB.
XB.DocumentElem ent.AppendChild ( XB1);
Derek Harmon

[Steven.Xu]

Thank you very much for your help! Than's GOOD!