1、创建一个xml文件
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 attributesnewBook.SetAttribute("genre", "Mystery"); newBook.SetAttribute("publicationdate", "2001"); newBook.SetAttribute("ISBN", "123456789");//create a new 'title' elementXmlElement newTitle = _doc.CreateElement("title"); newTitle.InnerText = "Case of the Missing cookie"; newBook.AppendChild(newTitle); //create new author elementXmlElement 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2、插入节点 与创建xml 文件类似
_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
节点的genre属性，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); } }以上就是Xmldocument 对象操作详细步骤的详细内容，更多请关注考高分网其它相关文章！
