C#对XML进行增删改查操作 (可封装)new

1、xml文件格式view plaincopy to clipboardprint? 熊猫 123456 panda asfdsafasdfasdfsad我是内容 2009-10-1 熊猫 123456 panda asfdsafasdfasdfsad我是内容 2009-10-1 增加view plaincopy to clipboardprint?XmlDocument xmld = new XmlDocument(); xmld.Load(Server.MapPath(App_Code/Message.xml);/加载xml文件 XmlNode root = xmld.SelectSingle

2、Node(messageList);/查找messageList节点 int i = xmld.SelectSingleNode(messageList).ChildNodes.Count + 1; XmlElement xml0 = xmld.CreateElement(message); xml0.SetAttribute(id, i.ToString(); XmlElement xml1 = xmld.CreateElement(Name);/创建一个Name节点 xml1.InnerText = this.txtName.Value.Trim(); xml0.AppendChild(x

3、ml1);/添加 XmlElement xml2 = xmld.CreateElement(QQ);/创建QQ节点 xml2.InnerText = this.txtQQ.Value.Trim(); xml0.AppendChild(xml2);/添加 XmlElement xml3 = xmld.CreateElement(Email);/创建一个Email节点 xml3.InnerText = this.txtEmail.Value.Trim(); xml0.AppendChild(xml3);/添加 XmlElement xml4 = xmld.CreateElement(Content

4、);/创建一个Content节点 xml4.InnerText = this.txtContent.Value; xml0.AppendChild(xml4);/添加 XmlElement xml5 = xmld.CreateElement(Time);/创建一个Time节点 xml5.InnerText = DateTime.Now.ToString(yyyy-MM-dd); xml0.AppendChild(xml5);/添加 root.AppendChild(xml0); xmld.Save(Server.MapPath(App_Code/Message.xml); XmlDocumen

5、t xmld = new XmlDocument(); xmld.Load(Server.MapPath(App_Code/Message.xml);/加载xml文件 XmlNode root = xmld.SelectSingleNode(messageList);/查找messageList节点 int i = xmld.SelectSingleNode(messageList).ChildNodes.Count + 1; XmlElement xml0 = xmld.CreateElement(message); xml0.SetAttribute(id, i.ToString(); X

6、mlElement xml1 = xmld.CreateElement(Name);/创建一个Name节点 xml1.InnerText = this.txtName.Value.Trim(); xml0.AppendChild(xml1);/添加 XmlElement xml2 = xmld.CreateElement(QQ);/创建QQ节点 xml2.InnerText = this.txtQQ.Value.Trim(); xml0.AppendChild(xml2);/添加 XmlElement xml3 = xmld.CreateElement(Email);/创建一个Email节点

7、xml3.InnerText = this.txtEmail.Value.Trim(); xml0.AppendChild(xml3);/添加 XmlElement xml4 = xmld.CreateElement(Content);/创建一个Content节点 xml4.InnerText = this.txtContent.Value; xml0.AppendChild(xml4);/添加 XmlElement xml5 = xmld.CreateElement(Time);/创建一个Time节点 xml5.InnerText = DateTime.Now.ToString(yyyy-M

8、M-dd); xml0.AppendChild(xml5);/添加 root.AppendChild(xml0); xmld.Save(Server.MapPath(App_Code/Message.xml);删除view plaincopy to clipboardprint?XmlDocument xmld = new XmlDocument(); xmld.Load(Server.MapPath(App_Code/Message.xml); XmlNodeList list = xmld.SelectSingleNode(messageList).ChildNodes; foreach

9、(XmlNode var in list) XmlElement xmle = (XmlElement)var; if (xmle.GetAttribute(id) = Id)/如果ID等于文本的值就删除 xmle.RemoveAll(); xmld.Save(Server.MapPath(App_Code/Message.xml);/删除后记得一定要保存 Page.ClientScript.RegisterStartupScript(GetType(), , alert(删除成功!);, true); else Page.ClientScript.RegisterStartupScript(

10、GetType(), , alert(删除失败!);, true); XmlDocument xmld = new XmlDocument(); xmld.Load(Server.MapPath(App_Code/Message.xml); XmlNodeList list = xmld.SelectSingleNode(messageList).ChildNodes; foreach (XmlNode var in list) XmlElement xmle = (XmlElement)var; if (xmle.GetAttribute(id) = Id)/如果ID等于文本的值就删除 xm

11、le.RemoveAll(); xmld.Save(Server.MapPath(App_Code/Message.xml);/删除后记得一定要保存 Page.ClientScript.RegisterStartupScript(GetType(), , alert(删除成功!);, true); else Page.ClientScript.RegisterStartupScript(GetType(), , alert(删除失败!);, true); 更改view plaincopy to clipboardprint?XmlDocument xmld = new XmlDocument(

12、); xmld.Load(Server.MapPath(App_Code/Message.xml); XmlNodeList list = xmld.SelectSingleNode(messageList).ChildNodes; foreach (XmlNode xmln in list) XmlElement xmle = (XmlElement)xmln;/格式转换 if (RequestID.Equals(xmle.GetAttribute(id) xmle.ChildNodes0.InnerText = this.txtName.Value; xmle.ChildNodes1.In

13、nerText = this.txtQQ.Value; xmle.ChildNodes2.InnerText = this.txtEmail.Value; xmle.ChildNodes3.InnerText = this.txtContent.Value; xmld.Save(Server.MapPath(App_Code/Message.xml); Page.ClientScript.RegisterStartupScript(this.GetType(), , alert(修改成功！);location.href=MessageList.aspx,true); XmlDocument x

14、mld = new XmlDocument(); xmld.Load(Server.MapPath(App_Code/Message.xml); XmlNodeList list = xmld.SelectSingleNode(messageList).ChildNodes; foreach (XmlNode xmln in list) XmlElement xmle = (XmlElement)xmln;/格式转换 if (RequestID.Equals(xmle.GetAttribute(id) xmle.ChildNodes0.InnerText = this.txtName.Valu

15、e; xmle.ChildNodes1.InnerText = this.txtQQ.Value; xmle.ChildNodes2.InnerText = this.txtEmail.Value; xmle.ChildNodes3.InnerText = this.txtContent.Value; xmld.Save(Server.MapPath(App_Code/Message.xml); Page.ClientScript.RegisterStartupScript(this.GetType(), , alert(修改成功！);location.href=MessageList.asp

16、x,true); 查询view plaincopy to clipboardprint?/下面的代码开始是用页面编码的方式实现的 XmlDocument xmld = new XmlDocument();/构建xml文档 xmld.Load(Server.MapPath(App_Code/Message.xml);/加载 XmlNodeList list = xmld.SelectSingleNode(messageList).ChildNodes;/获取子节点 if (list!=null) foreach (XmlNode node in list) XmlElement xmle = (

17、XmlElement)node;/转换 /这里到时候明天补上 /- XmlNodeReader reader = null; try string s = ; XmlDocument doc = new XmlDocument ( ) ; / 装入指定的XML文档 doc.Load ( C:Documents and SettingsAdministrator桌面1.xml ) ; / 设定XmlNodeReader对象来打开XML文件 reader = new XmlNodeReader ( doc ) ; / 读取XML文件中的数据，并显示出来 while ( reader.Read ( ) ) /判断当前读取得节点类型 switch ( reade