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using System.Xml;
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public XmlDocument objXmlDoc = new XmlDocument();
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string path=Server.Mappath("demo.xml");//µÃµ½ÎĵµÂ·¾¶
objXmlDoc.Load(path);//¼ÓÔØÎĵµ
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objXmlDoc.SelectNodes(xpath);//µÃµ½½áµã¼¯ºÏ
objXmlDoc.SelectSingleNode(xpath);//µÃµ½µ¥¸ö½áµã
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