c# 生成 xml 文件

方法一:
 
using System;
using System.Xml;
using System.IO;
using System.Text;
 
public class ReadWriteXml
{
 
    private static void Main()
    {
 
        // Create the file and writer.
        FileStream fs = new FileStream("products.xml", FileMode.Create);
        XmlTextWriter w = new XmlTextWriter(fs, Encoding.UTF8);
 
        // Start the document.
        w.WriteStartDocument();
        w.WriteStartElement("products");
 
        // Write a product.
        w.WriteStartElement("product");
        w.WriteAttributeString("id", "");
        w.WriteElementString("productName", "Gourmet Coffee");
        w.WriteElementString("productPrice", "0.99");
        w.WriteEndElement();
 
        // Write another product.
        w.WriteStartElement("product");
        w.WriteAttributeString("id", "");
        w.WriteElementString("productName", "Blue China Tea Pot");
        w.WriteElementString("productPrice", "102.99");
        w.WriteEndElement();
 
        // End the document.
        w.WriteEndElement();
        w.WriteEndDocument();
        w.Flush();
        fs.Close();
 
        Console.WriteLine("Document created. " +
            "Press Enter to read the document.");
        Console.ReadLine();
 
        fs = new FileStream("products.xml", FileMode.Open);
        XmlTextReader r = new XmlTextReader(fs);
 
        // Read all nodes.
        while (r.Read())
        {
 
            if (r.NodeType == XmlNodeType.Element)
            {
 
                Console.WriteLine();
                Console.WriteLine("<" + r.Name + ">");
 
                if (r.HasAttributes)
                {
 
                    for (int i = ; i < r.AttributeCount; i++)
                    {
                        Console.WriteLine("/tATTRIBUTE: " +
                            r.GetAttribute(i));
                    }
                }
            }
            else if (r.NodeType == XmlNodeType.Text)
            {
                Console.WriteLine("/tVALUE: " + r.Value);
            }
        }
        Console.ReadLine();
    }
}

方法二:
 
 1using System;
 2using System.Xml;
 public class GenerateXml
 {
 
     private static void Main()
     {
 
        // Create a new, empty document.
        XmlDocument doc = new XmlDocument();
        XmlNode docNode = doc.CreateXmlDeclaration("1.0", "UTF-8", null);
        doc.AppendChild(docNode);
 
        // Create and insert a new element.
        XmlNode productsNode = doc.CreateElement("products");
        doc.AppendChild(productsNode);
 
        // Create a nested element (with an attribute).
        XmlNode productNode = doc.CreateElement("product");
        XmlAttribute productAttribute = doc.CreateAttribute("id");
        productAttribute.Value = "";
        productNode.Attributes.Append(productAttribute);
        productsNode.AppendChild(productNode);
 
        // Create and add the sub-elements for this product node
        // (with contained text data).
        XmlNode nameNode = doc.CreateElement("productName");
        nameNode.AppendChild(doc.CreateTextNode("Gourmet Coffee"));
        productNode.AppendChild(nameNode);
        XmlNode priceNode = doc.CreateElement("productPrice");
        priceNode.AppendChild(doc.CreateTextNode("0.99"));
        productNode.AppendChild(priceNode);
 
        // Create and add another product node.
        productNode = doc.CreateElement("product");
        productAttribute = doc.CreateAttribute("id");
        productAttribute.Value = "";
        productNode.Attributes.Append(productAttribute);
        productsNode.AppendChild(productNode);
        nameNode = doc.CreateElement("productName");
        nameNode.AppendChild(doc.CreateTextNode("Blue China Tea Pot"));
        productNode.AppendChild(nameNode);
        priceNode = doc.CreateElement("productPrice");
        priceNode.AppendChild(doc.CreateTextNode("102.99"));
        productNode.AppendChild(priceNode);
 
        // Save the document (to the Console window rather than a file).
        doc.Save(Console.Out);
        Console.ReadLine();
    }
}