C#来创建和读取XML文档(1)

xmldoc = new System.Xml.XmlDocument ( ) ; 

xmlnode = xmldoc.CreateNode ( XmlNodeType.XmlDeclaration , "" , "" ) ;
xmldoc.AppendChild ( xmlnode ) ;

xmlelem = xmldoc.CreateElement ( "" , "ROOT" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "Root Text" ) ;

using System ;
using System.Xml ;
class MainClass
{
XmlDocument xmldoc ;
XmlNode xmlnode ;
XmlElement xmlelem ;
XmlElement xmlelem2 ;
XmlText xmltext ;
static void Main ( string [ ] args )
{
MainClass app = new MainClass ( ) ;
}
public MainClass ( )
{
xmldoc = new XmlDocument ( ) ;
//加入XML的声明段落
xmlnode = xmldoc.CreateNode ( XmlNodeType.XmlDeclaration , "" , "" ) ;
xmldoc.AppendChild ( xmlnode ) ;
//加入一个根元素
xmlelem = xmldoc.CreateElement ( "" , "ROOT" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "Root Text" ) ;
xmlelem.AppendChild ( xmltext ) ;
xmldoc.AppendChild ( xmlelem ) ;
//加入另外一个元素
xmlelem2 = xmldoc.CreateElement ("SampleElement" ) ;
xmlelem2 = xmldoc.CreateElement ( "" , "SampleElement" , "" ) ;
xmltext = xmldoc.CreateTextNode ( "The text of the sample element" ) ;
xmlelem2.AppendChild ( xmltext ) ;
xmldoc.ChildNodes.Item(1).AppendChild ( xmlelem2 ) ;
//保存创建好的XML文档
try
{
xmldoc.Save ( "c:\\data.xml" ) ; 
}
catch ( Exception e )
{
//显示错误信息
Console.WriteLine ( e.Message ) ;
}
Console.ReadLine ( ) ;
}
}