如何在XDocument中添加名稱空間而無需知道屬性和值？

Question

例如

  XmlNamespaceManager nsmgr = new XmlNamespaceManager(myxmldocument.NameTable); 
      nsmgr.AddNamespace("xdp", "http://ns.adobe.com/xdp/"); 
      nsmgr.AddNamespace("config", "http://www.xfa.org/schema/xci/1.0/"); 

同樣，我們怎樣才能添加的XDocument？

Answer 1

string s = myXDocument.ToString();//my XDocument corresponds to our existing XDocument 
XPathDocument xpath = new XPathDocument(new StringReader(s)); 
     XPathNavigator pathnavigator= xpath .CreateNavigator(); 
     XmlNamespaceManager nsmgr = new XmlNamespaceManager(pathnavigator.NameTable);