C#—XML读取、增加、修改和删除操作

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1.xml文件格式如下：

<?xml version="1.0" encoding="utf-8"?><projects><project name="PlatformFramewo" vss-path="Platform$/Source CodHdt$Pla~1.sln" /></projects>

1.读取

DataSet ds = new DataSet();ds.ReadXml(Server.MapPath(@"Projects.xml"));DataTable dt = ds.Tables[0];return dt;

//得到的datable在前台进行循环输出，省略...<tr style="font-weight: bold;"> //文字加粗<td style="border-bottom: solid 2px gray;"> //文字底部加横线

2.新增

XmlDocument xmlDoc = new XmlDocument();string Path = Server.MapPath(@"Projects.xml");xmlDoc.Load(Path);XmlNode root=xmlDoc.SelectSingleNode("projects");XmlElement xe1 = xmlDoc.CreateElement("project");xe1.SetAttribute("name", txtProjectName.Text);strVssPath = txtProjectVss.Text + "{1}quot; + txtProjectPath.Text + "{1}quot; + txtProjectSln.Text;xe1.SetAttribute("vss-path",strVssPath);root.AppendChild(xe1);xmlDoc.Save(Path);

3.修改

XmlDocument xmlDoc = new XmlDocument();string Path = Server.MapPath(@"Projects.xml");xmlDoc.Load(Path);XmlNodeList nodelist = xmlDoc.SelectSingleNode("projects").ChildNodes;foreach (XmlNode xn in nodelist){     XmlElement xe = (XmlElement)xn;     if (xe.GetAttribute("name") == Request["name"].ToString())     {         xe.SetAttribute("name", txtProjectName1.Text);         strVssPath = txtProjectVss1.Text + "{1}quot; + txtProjectPath1.Text + "{1}quot; + txtProjectSln1.Text;         xe.SetAttribute("vss-path", strVssPath);         xmlDoc.Save(Path);      }   }

4.删除

XmlDocument xmlDoc = new XmlDocument();string Path = Server.MapPath(@"Projects.xml");xmlDoc.Load(Path);XmlNodeList nodelist = xmlDoc.SelectSingleNode("projects").ChildNodes;foreach (XmlNode xn in nodelist){   XmlElement xe = (XmlElement)xn;   if (xe.GetAttribute("name") == Request["name"].ToString())   {     xn.ParentNode.RemoveChild(xn);     xmlDoc.Save(Path);   }}