XmlDocument doc = new XmlDocument(); XmlDeclaration dec = doc.CreateXmlDeclaration(1.0, UTF-8, null); doc.AppendChild(dec); XmlElement root = doc.CreateElement(bookstore);//创建根节点 doc.AppendChild(root); XmlElement newBook = _doc.CreateElement(book);//create a new 'book' element //set some attributes newBook.SetAttribute(genre, Mystery); newBook.SetAttribute(publicationdate, 2001); newBook.SetAttribute(ISBN, 123456789); //create a new 'title' element XmlElement newTitle = _doc.CreateElement(title); newTitle.InnerText = Case of the Missing Cookie; newBook.AppendChild(newTitle); //create new author element XmlElement newAuthor = _doc.CreateElement(author); newBook.AppendChild(newAuthor); //create new name element XmlElement newName = _doc.CreateElement(name); newName.InnerText = Cookie Monster; newAuthor.AppendChild(newName); //create new price element XmlElement newPrice = _doc.CreateElement(price); newPrice.InnerText = 9.95; newBook.AppendChild(newPrice); //add to the current documentdoc.DocumentElement.AppendChild(newBook);//_doc.DocumentElement为获取xml的根 doc.Save(bb.xml);将 XML 文档保存到指定的位置
_doc.Load(books.xml); XmlElement newBook = _doc.CreateElement(book); newBook.SetAttribute(genre, Mystery); newBook.SetAttribute(publicationdate, 2001); newBook.SetAttribute(ISBN, 123456789); XmlElement newTitle = _doc.CreateElement(title); newTitle.InnerText = Case of the Missing Cookie; newBook.AppendChild(newTitle); XmlElement newAuthor = _doc.CreateElement(author); newBook.AppendChild(newAuthor); XmlElement newName = _doc.CreateElement(name); newName.InnerText = Cookie Monster; newAuthor.AppendChild(newName); XmlElement newPrice = _doc.CreateElement(price); newPrice.InnerText = 9.95; newBook.AppendChild(newPrice); _doc.DocumentElement.AppendChild(newBook); _doc.Save(booksEdit.xml); 或者下面这样保存 XmlTextWriter tr = new XmlTextWriter(booksEdit.xml, null);//将xml文档保存,如果存在此文件,则覆盖 tr.Formatting = Formatting.Indented; _doc.WriteContentTo(tr); tr.Close();
3、修改xml节点
将genre属性值为“novel“的节点的genre值改为“updatenovel”,将该节点的子节点的文本修改为“啦啦啦啦”。
XmlNodeList nodeList=xmlDoc.SelectSingleNode(bookstore).ChildNodes;//获取bookstore节点的所有子节点 foreach(XmlNode xn in nodeList)//遍历所有子节点 { XmlElement xe=(XmlElement)xn;//将子节点类型转换为XmlElement类型 if(xe.GetAttribute(genre)==novel)//如果genre属性值为“李赞红” { xe.SetAttribute(genre,updatenovel);//则修改该属性为“update李赞红” XmlNodeList nls=xe.ChildNodes;//继续获取xe子节点的所有子节点 foreach(XmlNode xn1 in nls)//遍历 { XmlElement xe2=(XmlElement)xn1;//转换类型 if(xe2.Name==title)//如果找到 { xe2.InnerText=亚胜;//则修改 break;//找到退出来就可以了 } } break; } } xmlDoc.Save(bookstore.xml);//保存。
4、删除节点
XmlNodeList xnl=xmlDoc.SelectSingleNode(bookstore).ChildNodes; foreach(XmlNode xn in xnl) { XmlElement xe=(XmlElement)xn; if(xe.GetAttribute(genre)==fantasy) { xe.RemoveAttribute(genre);//删除genre属性 } else if(xe.GetAttribute(genre)==update李赞红) { xe.RemoveAll();//删除该节点的全部内容 } } xmlDoc.Save(bookstore.xml);
5、遍历xml
string filePath = bookstore.xml; XmlDocument doc = new XmlDocument(); doc.Load(filePath); XmlNode root = doc.DocumentElement; showNode(root); private static void showNode(XmlNode root) { if (root.NodeType==XmlNodeType.Text) { Console.WriteLine(root.Value); } if (root.NodeType==XmlNodeType.Element) { Console.WriteLine(root.Name); } if (root.Attributes!=null&&root.Attributes.Count>0) { foreach (XmlAttribute attr in root.Attributes) { Console.Write({0}={1} ,attr.Name,attr.Value); } Console.WriteLine(); } XmlNodeList chiledList = root.ChildNodes; foreach (XmlNode child in chiledList) { showNode(child); } }
原文地址:https://www.jb51.cc/xml/1194356.html
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