XML 操作基类(转载备用)

using System;

using System.Collections.Generic;

using System.Text;

using System.Xml;

using System.Data;

using System.IO;

/**//// <summary>

/// XML 操作基类

/// </summary>

public class XmlHelper

{

 /**//// <summary>

 /// 读取Xml到DataSet中

 /// </summary>

 /// <param name="XmlPath">路径</param>

 /// <returns>结果集</returns>

 public static DataSet GetXml(string XmlPath)

{

 DataSet ds = new DataSet();

 ds.ReadXml(@XmlPath);

 return ds;

 }

 /**//// <summary>

 /// 读取xml文档并返回一个节点:适用于一级节点

 /// </summary>

 /// <param name="XmlPath">xml路径</param>

 /// <param name="NodeName">节点</param>

 /// <returns></returns>

 public static string ReadXmlReturnNode(string XmlPath, string Node)

{

 XmlDocument docXml = new XmlDocument();

 docXml.Load(@XmlPath);

 XmlNodeList xn = docXml.GetElementsByTagName(Node);

 return xn.Item(0).InnerText.ToString();

 }

 /**//// <summary>

 /// 查找数据,返回当前节点的所有下级节点,填充到一个DataSet中

 /// </summary>

 /// <param name="xmlPath">xml文档路径</param>

 /// <param name="XmlPathNode">节点的路径:根节点/父节点/当前节点</param>

 /// <returns></returns>

 public static DataSet GetXmlData(string xmlPath, string XmlPathNode)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 DataSet ds = new DataSet();

 StringReader read = new StringReader(objXmlDoc.SelectSingleNode(XmlPathNode).OuterXml);

 ds.ReadXml(read);

 return ds;

 }

 /**//// <summary>

 /// 更新Xml节点内容

 /// </summary>

 /// <param name="xmlPath">xml路径</param>

 /// <param name="Node">要更换内容的节点:节点路径 根节点/父节点/当前节点</param>

 /// <param name="Content">新的内容</param>

 public static void XmlNodeReplace(string xmlPath, string Node, string Content)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 objXmlDoc.SelectSingleNode(Node).InnerText = Content;

 objXmlDoc.Save(xmlPath);

 }

 /**//// <summary>

 /// 更改节点的属性值

 /// </summary>

 /// <param name="xmlPath">文件路径</param>

 /// <param name="NodePath">节点路径</param>

 /// <param name="NodeAttribute1">要更改的节点属性的名称</param>

 /// <param name="NodeAttributeText">更改的属性值</param>

 public static void XmlAttributeEdit(string xmlPath, string NodePath, string NodeAttribute1, string NodeAttributeText)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 XmlNode nodePath = objXmlDoc.SelectSingleNode(NodePath);

 XmlElement xe = (XmlElement)nodePath;

 xe.SetAttribute(NodeAttribute1, NodeAttributeText);

 objXmlDoc.Save(xmlPath);

 }

 /**//// <summary>

 /// 删除XML节点和此节点下的子节点

 /// </summary>

 /// <param name="xmlPath">xml文档路径</param>

 /// <param name="Node">节点路径</param>

 public static void XmlNodeDelete(string xmlPath, string Node)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 string mainNode = Node.Substring(0, Node.LastIndexOf("/"));

 objXmlDoc.SelectSingleNode(mainNode).RemoveChild(objXmlDoc.SelectSingleNode(Node));

 objXmlDoc.Save(xmlPath);

 }

 /**//// <summary>

 /// 删除一个节点的属性

 /// </summary>

 /// <param name="xmlPath">文件路径</param>

 /// <param name="NodePath">节点路径（xpath）</param>

 /// <param name="NodeAttribute">属性名称</param>

 public static void xmlnNodeAttributeDel(string xmlPath, string NodePath, string NodeAttribute)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 XmlNode nodePath = objXmlDoc.SelectSingleNode(NodePath);

 XmlElement xe = (XmlElement)nodePath;

 xe.RemoveAttribute(NodeAttribute);

 objXmlDoc.Save(xmlPath);

 }

 /**//// <summary>

 /// 插入一个节点和此节点的子节点

 /// </summary>

 /// <param name="xmlPath">xml路径</param>

 /// <param name="MailNode">当前节点路径</param>

 /// <param name="ChildNode">新插入节点</param>

 /// <param name="Element">插入节点的子节点</param>

 /// <param name="Content">子节点的内容</param>

 public static void XmlInsertNode(string xmlPath, string MailNode, string ChildNode, string Element, string Content)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 XmlNode objRootNode = objXmlDoc.SelectSingleNode(MailNode);

 XmlElement objChildNode = objXmlDoc.CreateElement(ChildNode);

 objRootNode.AppendChild(objChildNode);

 XmlElement objElement = objXmlDoc.CreateElement(Element);

 objElement.InnerText = Content;

 objChildNode.AppendChild(objElement);

 objXmlDoc.Save(xmlPath);

 }

/**//// <summary>

 /// 向一个节点添加属性

 /// </summary>

 /// <param name="xmlPath">xml文件路径</param>

 /// <param name="NodePath">节点路径</param>

 /// <param name="NodeAttribute1">要添加的节点属性的名称</param>

 /// <param name="NodeAttributeText">要添加属性的值</param>

 public static void AddAttribute(string xmlPath, string NodePath, string NodeAttribute1, string NodeAttributeText)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 XmlAttribute nodeAttribute = objXmlDoc.CreateAttribute(NodeAttribute1);

 XmlNode nodePath = objXmlDoc.SelectSingleNode(NodePath);

 nodePath.Attributes.Append(nodeAttribute);

 XmlElement xe = (XmlElement)nodePath;

 xe.SetAttribute(NodeAttribute1, NodeAttributeText);

 objXmlDoc.Save(xmlPath);

 }

 /**//// <summary>

 /// 插入一节点,带一属性

 /// </summary>

 /// <param name="xmlPath">Xml文档路径</param>

 /// <param name="MainNode">当前节点路径</param>

 /// <param name="Element">新节点</param>

 /// <param name="Attrib">属性名称</param>

 /// <param name="AttribContent">属性值</param>

 /// <param name="Content">新节点值</param>

 public static void XmlInsertElement(string xmlPath, string MainNode, string Element, string Attrib, string AttribContent, string Content)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);

 XmlElement objElement = objXmlDoc.CreateElement(Element);

 objElement.SetAttribute(Attrib, AttribContent);

 objElement.InnerText = Content;

 objNode.AppendChild(objElement);

 objXmlDoc.Save(xmlPath);

 }

 /**//// <summary>

 /// 插入一节点,不带属性

 /// </summary>

 /// <param name="xmlPath">Xml文档路径</param>

 /// <param name="MainNode">当前节点路径</param>

 /// <param name="Element">新节点</param>

 /// <param name="Content">新节点值</param>

 public static void XmlInsertElement(string xmlPath, string MainNode, string Element, string Content)

{

 XmlDocument objXmlDoc = new XmlDocument();

 objXmlDoc.Load(xmlPath);

 XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);

 XmlElement objElement = objXmlDoc.CreateElement(Element);

 objElement.InnerText = Content;

 objNode.AppendChild(objElement);

 objXmlDoc.Save(xmlPath);

 }

 /**//// <summary>

 /// 在根节点下添加父节点

 /// </summary>

 public static void AddParentNode(string xmlPath,string parentNode)

{

 XmlDocument xdoc = new XmlDocument();

 xdoc.Load(xmlPath);

 // 创建一个新的menber节点并将它添加到根节点下

 XmlElement Node = xdoc.CreateElement(parentNode);

 xdoc.DocumentElement.PrependChild(Node);

 xdoc.Save(xmlPath);

 }

 

 /**//// <summary>

 /// 根据节点属性读取子节点值(较省资源模式)

 /// </summary>

 /// <param name="XmlPath">xml路径</param>

 /// <param name="FatherElement">父节点值</param>

 /// <param name="AttributeName">属性名称</param>

 /// <param name="AttributeValue">属性值</param>

 /// <param name="ArrayLength">返回的数组长度</param>

 /// <returns></returns>

 public static System.Collections.ArrayList GetSubElementByAttribute(string XmlPath, string FatherElement, string AttributeName, string AttributeValue, int ArrayLength)

{

 System.Collections.ArrayList al = new System.Collections.ArrayList();

 XmlDocument docXml = new XmlDocument();

 docXml.Load(@XmlPath);

 XmlNodeList xn;

 xn = docXml.DocumentElement.SelectNodes("//" + FatherElement + "[" + @AttributeName + "='" + AttributeValue + "']");

 XmlNodeList xx = xn.Item(0).ChildNodes;

 for (int i = 0; i < ArrayLength & i < xx.Count; i++)

{

 al.Add(xx.Item(i).InnerText);

 }

 return al;

 }

}