寫入XML檔案

寫入XML檔案

using System;
using System.IO;
using System.Xml;

public class Sample
{
  private const string filename = "sampledata.xml";

  public static void Main()
  {

     XmlTextWriter writer = new XmlTextWriter (filename, null);
     //Use indenting for readability.
     writer.Formatting = Formatting.Indented;

     writer.WriteComment("sample XML fragment");

     //Write an element (this one is the root).
     writer.WriteStartElement("bookstore");

     //Write the namespace declaration.
     writer.WriteAttributeString("xmlns", "bk", null, "urn:samples");

     writer.WriteStartElement("book");

     //Lookup the prefix and then write the ISBN attribute.
     string prefix = writer.LookupPrefix("urn:samples");
     writer.WriteStartAttribute(prefix, "ISBN", "urn:samples");
     writer.WriteString("1-861003-78");
     writer.WriteEndAttribute();     

     //Write the title.
     writer.WriteStartElement("title");
     writer.WriteString("The Handmaid's Tale");
     writer.WriteEndElement();

     //Write the price.
     writer.WriteElementString("price", "19.95");

     //Write the style element.
     writer.WriteStartElement(prefix, "style", "urn:samples");
     writer.WriteString("hardcover");
     writer.WriteEndElement();

     //Write the end tag for the book element.
     writer.WriteEndElement();

     //Write the close tag for the root element.
     writer.WriteEndElement();

     //Write the XML to file and close the writer.
     writer.Flush();
     writer.Close();

     //Read the file back in and parse to ensure well formed XML.
     XmlDocument doc = new XmlDocument();
     //Preserve white space for readability.
     doc.PreserveWhitespace = true;
     //Load the file
     doc.Load(filename);

     //Write the XML content to the console.
     Console.Write(doc.InnerXml);  

  }

}

另一種寫入XML檔案的方法

程式會在C槽下，產生檔案myXmlFile.xml

using System;
using System.Xml;

namespace ReadingXML2
{
    class Class1
    {
        static void Main(string[] args)
        {
            // Create a new file in C: dir
            XmlTextWriter textWriter = new XmlTextWriter("C:myXmFile.xml", null);
            textWriter.Formatting = Formatting.Indented;
            textWriter.Indentation = 4;
            // Opens the document
            textWriter.WriteStartDocument();
            // Write comments
            textWriter.WriteComment("First Comment XmlTextWriter Sample Example");
            textWriter.WriteComment("myXmlFile.xml in root dir");
            // Write first element
            textWriter.WriteStartElement("Student");
            textWriter.WriteStartElement("r", "RECORD", "urn:record");
            // Write next element
            textWriter.WriteStartElement("Name", "");
            textWriter.WriteString("Student");
            textWriter.WriteEndElement();
            // Write one more element
            textWriter.WriteStartElement("Address", ""); textWriter.WriteString("Colony");
            textWriter.WriteEndElement();
            // WriteChars
            char[] ch = new char[3];
            ch[0] = 'a';
            ch[1] = 'r';
            ch[2] = 'c';
            textWriter.WriteStartElement("Char");
            textWriter.WriteChars(ch, 0, ch.Length);
            textWriter.WriteEndElement();
            // Ends the document.
            textWriter.WriteEndDocument();
            // close writer
            textWriter.Close();
        }
    }
}