Exactly AndersR, u'r right that is happened, i understand now, thank you for clarify i need it, now
i do a requery as you tell me then it let me change data but when i saved data for second time in the xml file the data are duplicated.
why??
sample:
<RetrieveDataResult>
<NewDataSet xmlns=""> <Products xmlns:diffgr="urn:schemas-microsoft...
<idproduct>167</idproduct>
.
</Products>
<_xdns0:originalData xmlns:_xdns0="http://schemas.micro.
<NewDataSet xmlns="">
<Products xmlns:diffgr="urn:schemas-microsoft...
<idproduct>167</idproduct>
.
</Products
Fred Darwin Villareal