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  objNodeList = objDoc.SelectNodes(“Company/Department/Employees/Employee”)
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  objNodeList = objNode.SelectNodes(“/Company/Department/Employees/Employee”)
  ÒÔÉÏÁ½ÖÖ·½·¨¿É·µ»ØÒ»¸öNodeList¶ÔÏó£¬Èç¹ûÒª·µ»Øµ¥¸ö½Úµã¿ÉʹÓÃSelectSingleNode·½·¨£¬¸Ã·½·¨Èç¹û²éѯµ½Ò»¸ö»ò¶à¸ö½Úµã£¬·µ»ØµÚÒ»¸ö½Úµã£»Èç¹ûûÓвéѯµÄÈκνڵ㷵»Ø Nothing¡£ÀýÈ磺
  objNode = objNode.SelectSingleNode(“/Company/Department/Employees/Employee”)
  If Not (objNode is Nothing) then
   ‘- Do process
  End If
  2.2 ²éѯÒÑÖªÏà¶Ô·¾¶µÄ½Úµã£¨¼¯£©
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  objNode = objDoc.SelectSingleNode(“Company/Department”)
  objNodeList = objNode.SelectNodes(“../Department)
  objNode = objNode.SelectNode(“Employees/Employee”)
  2.3 ²éѯÒÑÖªÔªËØÃûµÄ½Úµã£¨¼¯£©
  ÔÚʹÓò»¹æÔòµÄ²ã´ÎÎĵµÊ±£¬ÓÉÓÚ²»ÖªµÀÖмä²ã´ÎµÄÔªËØÃû£¬¿ÉʹÓÃ//·ûºÅÀ´Ô½¹ýÖмäµÄ½Úµã£¬²éѯÆä×Ó£¬Ëï»ò¶à²ã´ÎÏÂµÄÆäËûËùÓÐÔªËØ¡£ÀýÈ磺
  objNodeList = objDoc.SelectNodes(“Company//Employee”)
  2.4 ²éѯÊôÐÔ£¨attribute£©½Úµã
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  objNodeList = objDoc.SelectNodes(“Company/Department/Employees/Em


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