XML文件的操作--上

XML文件因为语法简单，操作方便而受到广泛的使用。下面介绍XML文件的一些操作 CreateXmlFile函数创建一个XML文件 AlterXmlFile函数修改已存在的XML文件        /// <summary>         /// 新建XmlFile         /// </summary>         /// <param name="xmlFile"></param>         private void CreateXmlFile(string xmlFile)         {             XmlDocument doc = new XmlDocument();             doc.AppendChild(doc.CreateXmlDeclaration("1.0", "utf-8", ""));             //BookList             XmlNode blNode = doc.CreateElement("BookList");            //Book             XmlNode bookNode = CreateBookNode("我的二战回忆录", "丘吉尔", doc);             //Chapter             bookNode.AppendChild(CreateChapterNode("Chapter1", "胜利者的蠢事", doc));             bookNode.AppendChild(CreateChapterNode("Chapter2", "和平的鼎盛时期", doc));             blNode.AppendChild(bookNode);             doc.AppendChild(blNode);             doc.Save(xmlFile);         }         /// <summary>         /// 往BookList中追加子节点         /// </summary>         /// <param name="xmlFile"></param>         private void AlterXmlFile(string xmlFile)         {             XmlDocument doc = new XmlDocument();             doc.Load(xmlFile);             XmlNode bookNode = doc.SelectSingleNode("//Book");             bookNode.AppendChild(CreateChapterNode("Chapter3", "潜伏的危险", doc));             bookNode.AppendChild(CreateChapterNode("Chapter4", "阿道夫.希特勒", doc));             XmlNode blNode = doc.SelectSingleNode("//BookList");             XmlNode newBookNode = CreateBookNode("泰戈尔诗集", "泰戈尔", doc);             newBookNode.AppendChild(CreateChapterNode("Chapter1", "园丁集", doc));             newBookNode.AppendChild(CreateChapterNode("Chapter2", "飞鸟集", doc));             blNode.AppendChild(newBookNode);             doc.Save(xmlFile);         }         /// <summary>         /// Create Book Node         /// </summary>         /// <param name="name"></param>         /// <param name="author"></param>         /// <param name="doc"></param>         /// <returns></returns>         private XmlNode CreateBookNode(string name, string author,XmlDocument doc)         {             //Book             XmlNode bookNode = doc.CreateElement("Book");             //Name=""             XmlAttribute attrName = doc.CreateAttribute("Name");             attrName.Value = name;             bookNode.Attributes.Append(attrName);             //Author=""             XmlAttribute attrAuthor = doc.CreateAttribute("Author");             attrAuthor.Value = author;             bookNode.Attributes.Append(attrAuthor);             return bookNode;         }         /// <summary>         /// Create Chapter Node         /// </summary>         /// <param name="index"></param>         /// <param name="chapterTitle"></param>         /// <param name="doc"></param>         /// <returns></returns>         private XmlNode CreateChapterNode(string index,string chapterTitle,XmlDocument doc)         {             //Chapter             XmlNode chapNode = doc.CreateElement("Chapter");             //Index=""             XmlAttribute attrIndex = doc.CreateAttribute("Index");             attrIndex.Value = index;             chapNode.Attributes.Append(attrIndex);             //Title=             XmlAttribute attrTitle = doc.CreateAttribute("Title");             attrTitle.Value = chapterTitle;             chapNode.Attributes.Append(attrTitle);             return chapNode;         } 通过上面先创建，然后修改XML文件的操作，得到的XML文件如下： <?xml version="1.0" encoding="utf-8"?> <BookList>   <Book Name="我的二战回忆录" Author="丘吉尔">     <Chapter Index="Chapter1" Title="胜利者的蠢事" />     <Chapter Index="Chapter2" Title="和平的鼎盛时期" />     <Chapter Index="Chapter3" Title="潜伏的危险" />     <Chapter Index="Chapter4" Title="阿道夫.希特勒" />   </Book>   <Book Name="泰戈尔诗集" Author="泰戈尔">     <Chapter Index="Chapter1" Title="园丁集" />     <Chapter Index="Chapter2" Title="飞鸟集" />   </Book> </BookList> 下章将介绍XML文件的读操作，主要是用xpath读XML文件

转载于:https://www.cnblogs.com/LouisZhu/archive/2010/06/10/1755989.html