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分享<result>
<A>
</x>
</xx>
</A>
<A>
<x>what</x>
<xx>who</xx>
</A>
</result> XmlDocument xml = new XmlDocument();
xml.Load(@"E:\xmlxml.xml");
XmlNode root = xml.SelectSingleNode("/result");
XmlNode node = root.SelectSingleNode("A[position()=1]");
root.RemoveChild(node);
xml.Save(@"E:\xmlxml.xml");