<?xml version="1.0" encoding="utf-8"?> 
<bcaster> 
<item id="79" item_url="PicNews/Img/u=404630538,2075277077" link="HTML/050/AI_20081017_50_53_79.html" itemtitle="111111111111111111" /> 
<item id="78" item_url="PicNews/Img/Index_04_01_06.jpg" link="HTML/050/AI_20081017_50_53_78.html" itemtitle="zengjia" /> 
<item id="77" item_url="PicNews/Img/bsxwf.jpg" link="HTML/050/AI_20081017_50_53_77.html" itemtitle="中國藥科大學研究生部" /> 
<item id="76" item_url="PicNews/Img/江寧大門.jpg" link="HTML/050/AI_20081017_50_53_76.html" itemtitle="研究生部圖片新聞" /> 
<item id="75" item_url="PicNews/Img/中國藥科大學校標（完美2）.jpg" link="HTML/050/AI_20081017_50_53_75.html" itemtitle="新聞測試圖片新聞" /> 
</bcaster> 

/// 將圖片新聞信息寫入到圖片新聞播放器的XML文件集中 
/// </summary> 
/// <param name="picpath">圖片路徑</param> 
/// <param name="htmlpath">圖片新聞網址</param> 
/// <param name="title">標題</param> 
public void WritePicNewsXML(string picpath, string htmlpath, string title,string aid) 
{ 
XmlDocument xmlDoc; 
xmlDoc = new XmlDocument(); 
xmlDoc.Load(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); 

XmlNodeList xnl = xmlDoc.SelectSingleNode("bcaster").ChildNodes; 
//if (xnl.Count <= 5)//保持首頁圖片新聞不超過5條 
//{ 
XmlNode rootnode = xmlDoc.SelectSingleNode("bcaster"); 

XmlElement fel = (XmlElement)rootnode.FirstChild; 

XmlElement el = xmlDoc.CreateElement("item");//添加子節點及屬性 
el.SetAttribute("id", aid); 
el.SetAttribute("item_url", picpath); 
el.SetAttribute("link", htmlpath); 
el.SetAttribute("itemtitle", title); 
rootnode.PrependChild(el);//將新加入的圖片新聞添加到第一個位置 
if (xnl.Count > 5) 
{ 
XmlNode lxn = rootnode.LastChild; 
rootnode.RemoveChild(lxn);//刪除最末尾的圖片新聞 
} 


xmlDoc.Save(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); 
//} 
} 

/// <summary> 
/// 修改XML屬性 
/// </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(); 
xmlDoc.Load(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); 

XmlNodeList xnl = xmlDoc.SelectSingleNode("bcaster").ChildNodes; 
foreach (XmlNode xn in xnl) 
{ 
XmlElement xe = (XmlElement)xn; 
if (xe.GetAttribute("id") == aid)//如果節點存在則改寫 
{ 
xe.SetAttribute("item_url", picpath); 
xe.SetAttribute("link", htmlpath); 
xe.SetAttribute("itemtitle", title); 
break; 
} 
} 

xmlDoc.Save(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); 
} 

/// <summary> 
/// 刪除XML指定節點 
/// </summary> 
/// <param name="aid"></param> 
public void DelPicNewsXML(string aid) 
{ 
XmlDocument xmlDoc; 
xmlDoc = new XmlDocument(); 
xmlDoc.Load(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); 

XmlNodeList xnl = xmlDoc.SelectSingleNode("bcaster").ChildNodes; 
foreach (XmlNode xn in xnl) 
{ 
XmlElement xe = (XmlElement)xn; 
if (xe.GetAttribute("id") == aid)//如果節點存在刪除 
{ 
xe.RemoveAll(); 
break; 
} 
} 

xmlDoc.Save(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); 
}