DataList绑定xml数据,并实现删除和修改-技术开发专区

DataList绑定xml数据,并实现删除和修改

作者：ITPUB论坛编辑： nancy 2008-03-21 11:14

【IT168技术文档】

在网络上看到很多朋友在求datalist或是repeater控件绑定xml数据源的例子,在这里整理了一下,以datalist为便写了一个DEMO.
有xml文档:

<?xml version="1.0" encoding="utf-8" ?>
<music>
<Entry>
<Title> 千里之外   -   周杰伦 </Title>
<Ref   href="http://www.lzpcc.com.cn/268316.wma"   />
</Entry>
<Entry>
<Title> 听妈妈的话   -   周杰伦 </Title>
<Ref   href="http://wma.1ting.com/wmam/2.wma"   />
</Entry>
</music>

页面代码:

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Xml"%>
<%@ Import Namespace="System.Xml.XPath"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
private XmlDocument doc = new XmlDocument();
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
bind();
}
}
protected void bind()
{
//XmlDocument doc = new XmlDocument();
        doc.Load(Server.MapPath("x1.xml"));
XmlNodeList nodes = doc.SelectNodes("music/Entry");
DataList1.DataSource = nodes;
DataList1.DataBind();
}
protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{
switch(e.CommandName)
{ case "edit":
DataList1.EditItemIndex = e.Item.ItemIndex;
bind(); break;
case "cancel":
DataList1.EditItemIndex = -1;
bind(); break;
case "dele":
doc.Load(Server.MapPath("x1.xml"));
XmlNode node=doc.SelectSingleNode("/music/Entry/Ref[@href=’"+e.CommandArgument+"’]");
node.ParentNode.ParentNode.RemoveChild(node.ParentNode);
doc.Save(Server.MapPath("x1.xml"));
bind(); break;
case "update":
doc.Load(Server.MapPath("x1.xml"));
XmlNode xnode = doc.SelectSingleNode("/music/Entry/Ref[@href=’" + e.CommandArgument + "’]");
XmlElement elem1 = xnode as XmlElement;
elem1.SetAttribute("href", ((TextBox)e.Item.FindControl("tb2")).Text);
doc.Save(Server.MapPath("x1.xml"));
DataList1.EditItemIndex = -1;bind(); break;
}
}
</script>

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