<?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="中国药科大学研究生部" /> <item id="76" item_url="PicNews/Img/江宁大门.jpg" link="HTML/050/AI_20081017_50_53_76.html" itemtitle="研究生部图片新闻" /> <item id="75" item_url="PicNews/Img/中国药科大学校标（完美2）.jpg" link="HTML/050/AI_20081017_50_53_75.html" itemtitle="新闻测试图片新闻" /> </bcaster>

/// 将图片新闻信息写入到图片新闻播放器的XML文件集中 /// </summary> /// <param name="picpath">图片路径</param> /// <param name="htmlpath">图片新闻网址</param> /// <param name="title">标题</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)//保持首页图片新闻不超过5条 //{ XmlNode rootnode = xmlDoc.SelectSingleNode("bcaster"); XmlElement fel = (XmlElement)rootnode.FirstChild; XmlElement el = xmlDoc.CreateElement("item");//添加子节点及属性 el.SetAttribute("id", aid); el.SetAttribute("item_url", picpath); el.SetAttribute("link", htmlpath); el.SetAttribute("itemtitle", title); rootnode.PrependChild(el);//将新加入的图片新闻添加到第一个位置 if (xnl.Count > 5) { XmlNode lxn = rootnode.LastChild; rootnode.RemoveChild(lxn);//删除最末尾的图片新闻 } xmlDoc.Save(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); //} }

/// <summary> /// 修改XML属性 /// </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)//如果节点存在则改写 { xe.SetAttribute("item_url", picpath); xe.SetAttribute("link", htmlpath); xe.SetAttribute("itemtitle", title); break; } } xmlDoc.Save(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); }

/// <summary> /// 删除XML指定节点 /// </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)//如果节点存在删除 { xe.RemoveAll(); break; } } xmlDoc.Save(HttpContext.Current.Server.MapPath("../PicNews/bcastr.xml")); }