通過C#動態生成圖書信息XML文件（Books.xml），文件如下：
復制代碼代碼如下:
<?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>
方法1：使用StringBuilder拼接XML
復制代碼代碼如下:
/// <summary>
/// 創建圖書信息XML
/// </summary>
public void CreateBookXML(string fileName)
{
StringBuilder xmlResult = new StringBuilder("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
List<BookInfo> bookList = GetBookList(); //獲取圖書列表
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>");
}
//寫入文件
try
{
//1.創建文件流
FileStream fileStream = new FileStream(fileName, FileMode.Create);
//2.創建寫入器
StreamWriter streamWriter = new StreamWriter(fileStream);
//3.將內容寫入文件
streamWriter.WriteLine(xmlResult);
//4.關閉寫入器
streamWriter.Close();
//5.關閉文件流
fileStream.Close();
}
catch (Exception e)
{ }
}
方法2：使用XmlTextWriter類創建XML
復制代碼代碼如下:
/// <summary>
/// 創建圖書信息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(); //獲取圖書列表
if (bookList != null && bookList.Count > 0)
{
writer.WriteStartDocument();
writer.WriteStartElement("bookstore"); //創建父節點
foreach (BookInfo book in bookList)
{
writer.WriteStartElement("book"); //創建子節點
writer.WriteAttributeString("id", book.BookId.ToString()); //添加屬性
writer.WriteAttributeString("category", book.Category);
//圖書名稱節點
writer.WriteStartElement("title");
writer.WriteValue(book.Title); //節點賦值
writer.WriteEndElement();
//圖書作者節點
writer.WriteStartElement("author");
writer.WriteValue(book.Author);
writer.WriteEndElement();
//出版時間節點
writer.WriteStartElement("publishDate");
writer.WriteValue(book.PublishDate.ToString("yyyy-MM-dd"));
writer.WriteEndElement();
//銷售價格節點
writer.WriteStartElement("price");
writer.WriteValue(book.Price);
writer.WriteEndElement();
writer.WriteEndElement(); //子節點結束
}
writer.WriteEndElement(); //父節點結束
}
writer.WriteEndDocument();
writer.Close();
fileStream.Close();
}
catch (Exception e)
{ }
}
XmlTextWriter類：表示提供快速、非緩存、只進方法的編寫器，該方法生成包含 XML 數據的流或文件。
WriteStartDocument()方法：編寫XML的聲明。
WriteEndDocument()方法：關閉任何打開的元素或屬性并將編寫器重新設置為 Start 狀態。
WriteStartElement(string localName)方法：創建一個節點的開始。
WriteAttributeString(string localName, string value)方法：給節點添加屬性。
WriteValue(value)方法：給節點賦值。
3、其他代碼
3.1 獲取圖書列表
復制代碼代碼如下:
/// <summary>
/// 獲取圖書列表
/// </summary>
/// <returns></returns>
public List<BookInfo> GetBookList()
{
List<BookInfo> bookList = new List<BookInfo>();
BookInfo book1 = new BookInfo() {
BookId = 1,
Category = "CHILDREN",
Title = "Harry Potter",
Author = "J K. Rowling",
PublishDate = new DateTime(2005,08,15),
Price = 29.99
};
bookList.Add(book1);
BookInfo book2 = new BookInfo()
{
BookId = 2,
Category = "WEB",
Title = "Learning XML",
Author = "Erik T. Ray",
PublishDate = new DateTime(2003,10,18),
Price = 39.95
};
bookList.Add(book2);
return bookList;
}
3.2 圖書信息實體類
復制代碼代碼如下:
/// <summary>
/// 圖書信息實體類
/// </summary>
public class BookInfo
{
public int BookId { set; get; } //圖書ID
public string Title { set; get; } //圖書名稱
public string Category { set; get; } //圖書分類
public string Author { set; get; } //圖書作者
public DateTime PublishDate { set; get; } //出版時間
public Double Price { set; get; } //銷售價格
}
