Ok, in order to see what is going on i just create a new form with only one text box named tbox and one button.
The code for the button is below;XPathNavigator eray = MainDataSource.CreateNavigator();
string asd;asd = eray.SelectSingleNode("my:myFields/my:tbox", NamespaceManager).Value.ToString();
MessageBox.Show(asd);
Ok, ...