通過C#動態產生圖書資訊XML檔案

通過C#動態產生圖書資訊XML檔案（Books.xml），檔案如下：

<?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

/// <summary> /// 建立圖書資訊XML /// </summary> public void CreateBookXML(string fileName) { StringBuilder xmlResult = new StringBuilder("<?xml version=\"1.0\" encoding=\"utf-8\"?>"); List<BookInfo> bookList = GetBookList(); //擷取圖書列表 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>"); } //寫入檔案 try { //1.建立檔案流 FileStream fileStream = new FileStream(fileName, FileMode.Create); //2.建立寫入器 StreamWriter streamWriter = new StreamWriter(fileStream); //3.將內容寫入檔案 streamWriter.WriteLine(xmlResult); //4.關閉寫入器 streamWriter.Close(); //5.關閉檔案流 fileStream.Close(); } catch (Exception e) { } }

方法2：使用XmlTextWriter類建立XML

/// <summary> /// 建立圖書資訊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(); //擷取圖書列表 if (bookList != null && bookList.Count > 0) { writer.WriteStartDocument(); writer.WriteStartElement("bookstore"); //建立父節點 foreach (BookInfo book in bookList) { writer.WriteStartElement("book"); //建立子節點 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、非緩衝、只進方法的編寫器，該方法產生包含 XML 資料的流或檔案。
WriteStartDocument()方法：編寫XML的聲明。
WriteEndDocument()方法：關閉任何開啟的元素或屬性並將編寫器重新設定為 Start 狀態。
WriteStartElement(string localName)方法：建立一個節點的開始。
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 擷取圖書列表

/// <summary>   /// 擷取圖書列表   /// </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 圖書資訊實體類

/// <summary>   /// 圖書資訊實體類   /// </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   }

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