LINQ Operation XML

XDocument in use will be more simple than XmlDocument, in fact, think is a look for sub-node problems:

1XDocument doc =Xdocument.parse (xmlfile);2XElement root =Doc. Root;3XElement elements = root. Elements ("permition"). Where (U = U.attribute ("name"). Value = =permition). FirstOrDefault ();4   if(Elements = =NULL)5   {6        return false;7   }8XElement Elem = ( fromUinchElements. Descendants ("subpermition")9                          whereU.attribute ("name"). Value = =InfoTen                          Selectu). FirstOrDefault (); One         if(Elem! =NULL) A         { -             return true; -         } the         return false;

1. Locate the parent node and look for all child nodes through the parent node;

2. Match the attribute value corresponding to the child node.

LINQ Operation XML