C# Xml 移除指定节点

/// param name="xmlFileName" XML文档完全文件名(包含物理路径) /param /// param name="xpath" 要匹配的XPath表达式(例如:"//节点名//子节点名 /param /// param name="xmlAttributeName" 要删除包含xmlAttributeName属性的节点的名称 /param /// param name="AttributeValue" /param private void XmlNodeByXPath(string xmlFileName, string xpath, string xmlAttributeName, string AttributeValue) XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(xmlFileName); XmlNodeList xNodes = xmlDoc.SelectSingleNode(xpath).ChildNodes; for (int i = xNodes.Count - 1; i i--) XmlElement xe = (XmlElement)xNodes[i]; if (xe.GetAttribute(xmlAttributeName) == AttributeValue) xNodes[i].ParentNode.RemoveChild(xNodes[i]); xmlDoc.Save(xmlFileName); }

实验：XmlNodeByXPath("E:\\bookstore.xml", "bookstore", "genre", "李3");

 ?xml version="1.0" encoding="gb2312"? 

 bookstore 

 book genre="李1" ISBN="2-3645-4" 

 title Net从入门到精通 /title 

 author 李大蒜 /author 

 price 58.3 /price 

 /book 

 book genre="李2" ISBN="2-3631-4" 

 title CS从入门到精通 /title 

 author 候捷 /author 

 price 58.3 /price 

 /book 

 /bookstore 

1、删除节点不能使用foreach，使用的话会造成删除XML一个节点，就跳出循环，也不报错，很隐蔽的错误。 2、该函数也可以这么实现

 /// summary 

 /// 删除属性值等于“AttributeValue”的节点

 /// /summary 

 /// param name="xmlFileName" XML文档完全文件名(包含物理路径) /param 

 /// param name="xpath" 要匹配的XPath表达式(例如:"//节点名//子节点名 /param 

 /// param name="xmlAttributeName" 要删除包含xmlAttributeName属性的节点的名称 /param 

 /// param name="AttributeValue" /param 

 private void XmlNodeByXPath(string xmlFileName, string xpath, string xmlAttributeName, string AttributeValue)

 XmlDocument xmlDoc = new XmlDocument();

 xmlDoc.Load(xmlFileName);

 XmlNode root = xmlDoc.SelectSingleNode(xpath);

 XmlNodeList xnl = xmlDoc.SelectSingleNode(xpath).ChildNodes;

 for (int i = 0; i xnl.Count; i++)

 XmlElement xe = (XmlElement)xnl.Item(i);

 if (xe.GetAttribute(xmlAttributeName) == AttributeValue)

 root.RemoveChild(xe);

 if (i xnl.Count) i = i - 1;

 xmlDoc.Save(xmlFileName); 

 }