通过C#动态生成图书信息XML文件（Books.xml），，文件如下：
<?xml version="1.0" encoding="iso-8859-1"?>
<bookstore>
<book id="1" category="CHILDREN">
<title>Harry Potter</title>
<author>J K. Rowling</author>
<publishDate>2005-08-15</publishDate>
<price>29.99</price>
</book>
<book id="2" category="WEB">
<title>Learning XML</title>
<author>Erik T. Ray</author>
<publishDate>2003-10-18</publishDate>
<price>39.95</price>
</book>
</bookstore>
要领1：使用StringBuilder拼接XML
/// <summary>
/// 创建图书信息XML
/// </summary>
public void CreateBookXML(string fileName)
{
StringBuilder xmlResult = new StringBuilder("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
List<BookInfo> bookList = GetBookList(); //获取图书列表
if (bookList != null && bookList.Count > 0)
{
xmlResult.Append("<bookstore>");
foreach (BookInfo book in bookList)
{
xmlResult.AppendFormat("<book id=\"{0}\" category=\"{1}\">", book.BookId, book.Category);
xmlResult.AppendFormat("<title>{0}</title>", book.Title);
xmlResult.AppendFormat("<author>{0}</author>", book.Author);
xmlResult.AppendFormat("<publishDate>{0}</publishDate>", book.PublishDate.ToString("yyyy-MM-dd"));
xmlResult.AppendFormat("<price>{0}</price>", book.Price);
xmlResult.Append("</book>");
}
xmlResult.Append("</bookstore>");
}
//写入文件
try
{
//1.创建文件流
FileStream fileStream = new FileStream(fileName, FileMode.Create);
//2.创建写入器
StreamWriter streamWriter = new StreamWriter(fileStream);
//3.将内容写入文件
streamWriter.WriteLine(xmlResult);
//4.*写入器
streamWriter.Close();
//5.*文件流
fileStream.Close();
}
catch (Exception e)
{ }
}
要领2：使用XmlTextWriter类创建XML
/// <summary>
/// 创建图书信息XML
/// </summary>
/// <param name="fileName"></param>
public void CreateBookXML(string fileName)
{
try
{
FileStream fileStream = new FileStream(fileName, FileMode.Create);
XmlTextWriter writer = new XmlTextWriter(fileStream, Encoding.UTF8);
List<BookInfo> bookList = GetBookList(); //获取图书列表
if (bookList != null && bookList.Count > 0)
{
writer.WriteStartDocument();
writer.WriteStartElement("bookstore"); //创建父节点
foreach (BookInfo book in bookList)
{