创建XML文件的两种方法
创建XML文件的两种方法
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//注意 using System.Xml;
方法一：按照XML的结构一步一步的构建XML文档.
通过.Net FrameWork SDK中的命名空间"System.Xml"中封装的各种类来实现的
XmlText xmltext ;
XmlDocument xmldoc = new XmlDocument( ) ;
//加入XML的声明段落
XmlNode xmlnode =xmldoc.CreateXmlDeclaration("1.0","gb2312",null);
xmldoc.AppendChild ( xmlnode ) ;
//加入一个根元素
XmlElement xmlelem = xmldoc.CreateElement ( "" , "bookstore" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "" ) ;
xmlelem.AppendChild ( xmltext ) ;
xmldoc.AppendChild ( xmlelem ) ;
//加入一个子元素
XmlElement xmlelem1 = xmldoc.CreateElement ( "" , "book" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "" ) ;
xmlelem1.AppendChild (xmltext) ;
//为子元素"book"增加两个属性
xmlelem1.SetAttribute("genre","","fantasy");
xmlelem1.SetAttribute("ISBN","2-3631-4");
xmldoc.ChildNodes.Item(1).AppendChild (xmlelem1) ;
//创建三个子元素的子元素
XmlElement xmlelem2 = xmldoc.CreateElement ( "" , "title" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "Oberon's Legacy" ) ;
xmlelem2.AppendChild ( xmltext ) ;
xmldoc.ChildNodes.Item(1).AppendChild ( xmlelem1 ).AppendChild(xmlelem2) ;
XmlElement xmlelem3 = xmldoc.CreateElement ( "" , "author" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "Corets, Eva" ) ;
xmlelem3.AppendChild ( xmltext ) ;
xmldoc.ChildNodes.Item(1).AppendChild ( xmlelem1 ).AppendChild(xmlelem3) ;
XmlElement xmlelem4 = xmldoc.CreateElement ( "" , "price" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "5.95" ) ;
xmlelem4.AppendChild ( xmltext ) ;
xmldoc.ChildNodes.Item(1).AppendChild ( xmlelem1 ).AppendChild(xmlelem4) ;
xmldoc.Save ( @"C:/Inetpub/wwwroot/MyAspnet/bin/bookstore.xml") ; //保存
方法二：直接定义XML文档，然后保存到文件。
通过"XmlDocument"类中的"LoadXml"方法
XmlDocument xmldoc = new XmlDocument ( ) ; //创建空的XML文档
xmldoc.LoadXml("<?xml version='1.0' encoding='gb2312'?>"+
"<bookstore>"+
"<book genre='fantasy' ISBN='2-3631-4'>" +
"<title>Oberon's Legacy</title>" +
"<author>Corets, Eva</author>"+
"<price>5.95</price>"+
"</book>"+
"</bookstore>");
xmldoc.Save ( @"C:/Inetpub/wwwroot/MyAspnet/bin/bookstore.xml") ; //保存
=======================以上两种方法产生如下的XML文档===========================
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
</bookstore>
比较：第一种创建起来更加灵活，而第二种创建起来更加方便。