<?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:运用StringBuilder拼接XML
/// <summary> /// 建立图书信息XML /// </summary> public void CreateBookXML(string fileName) { StringBuilder xmlResult = new StringBuilder("<?xml version=\"1.0\" encoding=\"utf-8\"?>"); List<BookInfo> bookList = GetBookList(); //猎取图书列表 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.建立文件流 FileStream fileStream = new FileStream(fileName, FileMode.Create); //2.建立写入器 StreamWriter streamWriter = new StreamWriter(fileStream); //3.将内容写入文件 streamWriter.WriteLine(xmlResult); //4.封闭写入器 streamWriter.Close(); //5.封闭文件流 fileStream.Close(); } catch (Exception e) { } }
要领2:运用XmlTextWriter类建立XML
/// <summary> /// 建立图书信息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(); //猎取图书列表 if (bookList != null && bookList.Count > 0) { writer.WriteStartDocument(); writer.WriteStartElement("bookstore"); //建立父节点 foreach (BookInfo book in bookList) { writer.WriteStartElement("book"); //建立子节点 writer.WriteAttributeString("id", book.BookId.ToString()); //增加属性 writer.WriteAttributeString("category", book.Category); //图书称号节点 writer.WriteStartElement("title"); writer.WriteValue(book.Title); //节点赋值 writer.WriteEndElement(); //图书作者节点 writer.WriteStartElement("author"); writer.WriteValue(book.Author); writer.WriteEndElement(); //出书时候节点 writer.WriteStartElement("publishDate"); writer.WriteValue(book.PublishDate.ToString("yyyy-MM-dd")); writer.WriteEndElement(); //销售价格节点 writer.WriteStartElement("price"); writer.WriteValue(book.Price); writer.WriteEndElement(); writer.WriteEndElement(); //子节点完毕 } writer.WriteEndElement(); //父节点完毕 } writer.WriteEndDocument(); writer.Close(); fileStream.Close(); } catch (Exception e) { } }
XmlTextWriter类:示意供应疾速、非缓存、只进要领的编写器,该要领生成包括 XML 数据的流或文件。
WriteStartDocument()要领:编写XML的声明。
WriteEndDocument()要领:封闭任何翻开的元素或属性并将编写重视新设置为 Start 状况。
WriteStartElement(string localName)要领:建立一个节点的最先。
WriteAttributeString(string localName, string value)要领:给节点增加属性。
WriteValue(value)要领:给节点赋值。
3、其他代码
3.1 猎取图书列表
/// <summary> /// 猎取图书列表 /// </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 图书信息实体类
/// <summary> /// 图书信息实体类 /// </summary> public class BookInfo { public int BookId { set; get; } //图书ID public string Title { set; get; } //图书称号 public string Category { set; get; } //图书分类 public string Author { set; get; } //图书作者 public DateTime PublishDate { set; get; } //出书时候 public Double Price { set; get; } //销售价格 }
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