Why don't you try writing an XSLT transformation that combines all the 
nodes in <test> and then eliminates the duplicates? I think you could either 
combine the two xml documents prior to the transform, or perhaps by 
importing them from within the XSLT.

You can then do an xmlDoc.DocumentElement.Transform...

Rick

"Meelis Lilbok" <meelis.lilbok@d...> wrote in message 
news:uvG8V2z$GHA.2328@T......
> Hi is for synchronizing two xml files any fast solution?
>
> Lets say i have 2 xml files 1.xml and 2.xml
>
> 1.xml contianes
>
> <test>
>    <t id="1">Hello</t>
>    <t id="2">World</t>
>    <t id="3">Good bye!</td>
> </test>
>
> 2.xml containes
> <test>
>    <t id="1">Hello</t>
>    <t id="2">World</t>
> </test>
>
> After synchronizing 2.xml must look likt this
> <test>
>    <t id="1">Hello</t>
>    <t id="2">World</t>
>    <t id="3">Good bye!</td>
> </test>
>
> At the moment i use
>    For Each
>    Next
> and this is too slow, if file containes  about 1000 <t> nodes
>
> Regards;
> Meelis
>
>
>