[C#] Select one row from a xml file

[hkucsis]

Hi,

I have a xml file which is created by myDataSet.WriteXml(). myDataSet contains one datatable which in turn contains several thousands rows.

Now I want to select one row (that can be done by a simple select in sql) from the xml file. Do I need to restore the dataset first from the xml file? Or I can work on the xml file directly?

Thanks.

Michael