Example code for adding, deleting and modifying XML documents

The XML file name is

The structure is as follows:

Copy the codeThe code is as follows:

 
<?xml version="1.0" encoding="utf-8"?> 
<bcaster> 
<item  item_url="PicNews/Img/u=404630538,2075277077" link="HTML/050/AI_20081017_50_53_79.html" itemtitle="111111111111111111" /> 
<item  item_url="PicNews/Img/Index_04_01_06.jpg" link="HTML/050/AI_20081017_50_53_78.html" itemtitle="zengjia" /> 
<item item_url="PicNews/Img/" link="HTML/050/AI_20081017_50_53_77.html" itemtitle="Graduate Department of China Pharmaceutical University" />
<item item_url="PicNews/Img/Jiangning Gate.jpg" link="HTML/050/AI_20081017_50_53_76.html" itemtitle="Graduate School Department Picture News" />
<item item_url="PicNews/Img/China Pharmaceutical University School Standard (Perfect 2).jpg" link="HTML/050/AI_20081017_50_53_75.html" itemtitle="News Test Picture News" />
</bcaster> 

Functions to add nodes:

Copy the codeThe code is as follows:

 
/// Write image news information to the XML file set of the image news player
/// </summary> 
/// <param name="picpath">Picture path</param>
/// <param name="htmlpath">Picture News Website</param>
/// <param name="title">Title</param>
public void WritePicNewsXML(string picpath, string htmlpath, string title,string aid) 
{ 
XmlDocument xmlDoc; 
xmlDoc = new XmlDocument(); 
(("../PicNews/")); 

XmlNodeList xnl = ("bcaster").ChildNodes; 
//if ( <= 5)//Keep no more than 5 pictures and news on the homepage
//{ 
XmlNode rootnode = ("bcaster"); 

XmlElement fel = (XmlElement); 

XmlElement el = ("item");//Add child nodes and attributes
("id", aid); 
("item_url", picpath); 
("link", htmlpath); 
("itemtitle", title); 
(el);//Add newly added image news to the first location
if ( > 5) 
{ 
XmlNode lxn = ; 
(lxn);//Delete the last picture news
} 


(("../PicNews/")); 
//} 
} 

Functions that modify the properties of XML nodes:

Copy the codeThe code is as follows:

 
/// <summary> 
/// Modify XML properties
/// </summary> 
/// <param name="picpath"></param> 
/// <param name="htmlpath"></param> 
/// <param name="title"></param> 
/// <param name="aid"></param> 
public void EditPicNewsXML(string picpath, string htmlpath, string title, string aid) 
{ 

XmlDocument xmlDoc; 
xmlDoc = new XmlDocument(); 
(("../PicNews/")); 

XmlNodeList xnl = ("bcaster").ChildNodes; 
foreach (XmlNode xn in xnl) 
{ 
XmlElement xe = (XmlElement)xn; 
if (("id") == aid)//Rewrite if the node exists
{ 
("item_url", picpath); 
("link", htmlpath); 
("itemtitle", title); 
break; 
} 
} 

(("../PicNews/")); 
} 

Functions that delete the specified XML node:

Copy the codeThe code is as follows:

 
/// <summary> 
/// Delete XML specified node
/// </summary> 
/// <param name="aid"></param> 
public void DelPicNewsXML(string aid) 
{ 
XmlDocument xmlDoc; 
xmlDoc = new XmlDocument(); 
(("../PicNews/")); 

XmlNodeList xnl = ("bcaster").ChildNodes; 
foreach (XmlNode xn in xnl) 
{ 
XmlElement xe = (XmlElement)xn; 
if (("id") == aid)//If the node exists
{ 
(); 
break; 
} 
} 

(("../PicNews/")); 
} 