的XPathNavigator引發錯誤引發NotSupportedException

Question

我想用下面的代碼

private static bool ResetUpdateVersion() 
{ 
    // this indicate either the verwsion is different or not 
    // this will either call the update only or writting the defualt 
    bool Result = false; 
    //// check for version using xpath 
    XPathNavigator navigator = document.CreateNavigator(); 
    //ShortcutList is the main element that contain all the other elements 
    XPathNavigator node = navigator.SelectSingleNode(@"/ShortcutList"); 
    XmlNamespaceManager ns = new XmlNamespaceManager(navigator.NameTable); 
    if (node != null) 
    { 
     if (node.GetAttribute("Version", ns.DefaultNamespace) != Version) 
     { 
      node = navigator.SelectSingleNode(@"/ShortcutList/@Version"); 

      node.SetValue(Version); 

      Result = true; 
     } 
     else 
     { 
      Result = false; 
     } 
    } 

    return Result; 
} 

更新的XDocument，但上線node.SetValue(Version);提高NotSupportedException異常，我不知道爲什麼，任何想法來解決

Answer 1

的XPathNavigator如果您想操作XDocument或XElement，然後使用System.Xml.Linq中公開的API（例如http://msdn.microsoft.com/en-us/library/system.xml.linq.xelement.setvalue.aspx），則只能讀取XDocument或XElement。