asp. net A simple method for generating XML files

This article gives an example of how asp. net generates an XML file. Share it for your reference, as follows:

Mode 1: Use DataSet directly

SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Server=127.0.0.1;User ID=sa;Password=sa;Database=northwind;Persist Security Info=True";
conn.Open();
SqlDataAdapter da = new SqlDataAdapter("select * from  Table ", conn);
SqlCommandBuilder thisBulder = new SqlCommandBuilder(da);
DataSet ds = new DataSet();
da.Fill(ds);
ds.WriteXml(@"C:/temp.xml");

Method 2: Customize the build method

using System.Xml;// Header plus this namespace 
XmlDocument xd = new XmlDocument();// Denote XML Document 
XmlDeclaration xde;// Denote  XML  Declaration node: <?xml version='1.0'...?>
xde = xd.CreateXmlDeclaration("1.0", "GBK", null);// Parameter of the 2 Items are encoded 
//standalone Defines whether the document can be processed without reading any other files , Default to no
xd.AppendChild(xde);//<?xml version="1.0" encoding="UTF-8" standalone="yes"?> End of generation 
XmlElement xe = xd.CreateElement("Root");// Create 1 A Root Root element 
xd.AppendChild(xe);//Root Root element creation complete 
XmlNode root = xd.SelectSingleNode("Root");// Find <Root>
XmlElement xe1 = xd.CreateElement("Tree");// In <Root> Create elements under <Tree>
xe1.SetAttribute("id","1");// Specifies the property value of the property 
xe1.InnerText = " Type 1";// Specify the attribute text node 
root.AppendChild(xe1);// Complete child node <Tree>
xd.Save(Server.MapPath("xml.xml"));

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I hope this paper is helpful to everyone's asp. net programming.