C#对XML进行增删改查操作(可封装)(精)

1、xml 文件格式view pla in copy to clipboardpr int?熊猫123456pan asfdsafasdfasdfsad 我是内容2009-10-1熊猫123456pan asfdsafasdfasdfsad2009-10-1增加view pla in copy to clipboardpr int?XmlDocume nt xmld = new XmlDocume nt(;xmld.Load(Server.MapPath(App_Code/Message.xml;XmlNode root = xmld.SelectSingleNode(messageList;/查

2、找 messageList 节点 int i= xmld.SelectSi ngleNode(messageList.ChildNodes.Cou nt + 1;我是内容加载 xml 文件XmlEleme nt xml0 = xmld.CreateEleme nt(message;xml0.SetAttribute(id, i.ToStri ng(;XmlElement xml1 = xmld.CreateElement(Name;创建一个 Name 节点xml1 .Inn erText = this.txtName.Value.Trim(;xmlO.Appe ndChild(xml1; 添加

3、XmlElement xml2 = xmld.CreateElement(QQ;创建 QQ 节点xml2.I nn erText = this.txtQQ.Value.Trim(;xml0.Appe ndChild(xml2; 添加XmlElement xml3 = xmld.CreateElement(Email;创建一个 Email 节点xml3 .Inn erText = this.txtEmail.Value.Trim(;xml0.Appe ndChild(xml3; 添加XmlElement xml4 = xmld.CreateElement(Content;创建一个 Content

4、 节点xml4 .Inn erText = this.txtC onten t.Value;xml0.Appe ndChild(xml4; 添加XmlElement xml5 = xmld.CreateElement(Time;创建一个 Time 节点xml5.I nn erText = DateTime.Now.ToStri ng(yyyy-MM-dd;xml0.Appe ndChild(xml5; 添加root.Appe ndChild(xmlO;xmld.Save(Server.MapPath(App_Code/Message.xml;XmlDocume nt xmld = new Xm

5、lDocume nt(;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.SelectSi ngleNode(messageList.ChildNodes.Cou nt + 1;XmlEleme nt xmlO = xmld.CreateEleme nt(message;xmlO.SetAttribute(id, i.ToStri ng(;XmlElement xml1 = xm

6、ld.CreateElement(Name;创建一个 Name 节点xml1 .Inn erText = this.txtName.Value.Trim(;xmlO.Appe ndChild(xml1; 添加XmlElement xml2 = xmld.CreateElement(QQ;创建 QQ 节点xml2.I nn erText = this.txtQQ.Value.Trim(;xml0.Appe ndChild(xml2; 添加XmlElement xml3 = xmld.CreateElement(Email;创建一个 Email 节点xml3 .Inn erText = this.

7、txtEmail.Value.Trim(;xml0.Appe ndChild(xml3; 添加XmlElement xml4 = xmld.CreateElement(Content;创建一个 Content 节点xml4 .Inn erText = this.txtC onten t.Value;xml0.Appe ndChild(xml4; 添加XmlElement xml5 = xmld.CreateElement(Time;创建一个 Time 节点xml5.I nn erText = DateTime.Now.ToStri ng(yyyy-MM-dd;xml0.Appe ndChild

8、(xml5; 添加root.Appe ndChild(xmlO;xmld.Save(Server.MapPath(App_Code/Message.xml;删除view pla in copy to clipboardpr int?XmlDocume nt xmld = new XmlDocume nt(;xmld.Load(Server.MapPath(App_Code/Message.xml;XmlNodeList list = xmld.SelectSi ngleNode(messageList.ChildNodes;foreach (XmlNode var in listXmlElem

9、e nt xmle = (XmlEleme ntvar;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; elsePage.ClientScript.RegisterStartupScript(GetType(, , alert(删除失败!;, true;XmlDo

10、cume nt xmld = new XmlDocume nt(;xmld. Load(Server.MapPath(App_Code/Message.xml;XmlNodeList list = xmld.SelectSi ngleNode(messageList.ChildNodes;foreach (XmlNode var in listXmlEleme nt xmle = (XmlEleme ntvar;if (xmle.GetAttribute(id = Id/ 如果 ID 等于文本的值就删除xmle. RemoveAll(;xmld.Save(Server.MapPath(App_

11、Code/Message.xml; 删除后记得一定要保存Page.ClientScript.RegisterStartupScript(GetType(, , alert( 删除成功！!;，true;elsePage.ClientScript.RegisterStartupScript(GetType(, , alert( 删除失败!;, true;更改view pla in copy to clipboardpr int?XmlDocume nt xmld = new XmlDocume nt(;xmld.Load(Server.MapPath(App_Code/Message.xml;Xm

12、lNodeList list = xmld.SelectSingleNode(messageList.ChildNodes;foreach (XmlNode xmln in listXmlEleme nt xmle = (XmlEleme ntxml n; 格式转换if (RequestID.Equals(xmle.GetAttribute(id xmle.ChildNodesO.l nn erText = this.txtName.Value;xmle.ChildNodes1.l nn erText = this.txtQQ.Value;xmle.ChildNodes2.l nn erTex

13、t = this.txtEmail.Value;xmle.ChildNodes3.l nn erText = this.txtCo nte nt.Value;xmld.Save(Server.MapPath(App_Code/Message.xml;Page.Clie ntScript.RegisterStartupScript(this.GetType(, , alert(修改成功！ ！;locati on .href=MessageList.aspx,true;XmlDocume nt xmld = new XmlDocume nt(;xmld. Load(Server.MapPath(A

14、pp_Code/Message.xml;XmlNodeList list = xmld.SelectSi ngleNode(messageList.ChildNodes;foreach (XmlNode xmln in listXmlEleme nt xmle = (XmlEleme ntxml n; 格式转换if (RequestID.Equals(xmle.GetAttribute(idxmle. ChildNodes0.l nn erText = this.txtName.Value;xmle.ChildNodes1.l nn erText = this.txtQQ.Value;xmle

15、.ChildNodes2.l nn erText = this.txtEmail.Value;xmle.ChildNodes3.l nn erText = this.txtCo nte nt.Value;xmld.Save(Server.MapPath(App_Code/Message.xml;Page.Clie ntScript.RegisterStartupScript(this.GetType(, , alert(修改成功！ ！;locati on .href=MessageList.aspx,true;查询 |view pla in copy to clipboardpr int?/下

16、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.SelectS in gleNode(messageList.ChildNodes;/获取子节点if (list!=null foreach (XmlNode node in listXmlEleme nt xmle = (XmlEleme ntno de;/ 转换/这里到时候明天补上/.XmlNodeReader reader = n ull;trystri ng s =;XmlDocume nt doc = new XmlDocume nt (;/装入指定的 XML 文档桌面 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，并显示岀来while ( reader.Read (/判断当前读取得节点类型sw