ASP.NET实现Cache浏览器的管理
2024-07-10 12:55:00
供稿：网友
对cache进行浏览并管理。
<%@ page language="<a href="http://dev.21tx.com/dotnet/csharp/" target="_blank">c#</a>" enableviewstate = "true"%>
<%@ import namespace="system" %>
<%@ import namespace="system.configuration" %>
<%@ import namespace="system.collections" %>
<%@ import namespace="system.collections.specialized" %>
<%@ import namespace="system.data" %>
<script runat="server">
//http://<a href="http://dev.21tx.com/web/asp/" target="_blank">asp</a>alliance.com/aldotnet/examples/cacheviewer.aspx
//http://scottwater.com
private void page_load(object sender, system.eventargs e)
{
if(!ispostback)
{
hlrefresh.navigateurl = request.rawurl;
bindgrid();
}
}
//绑定到<a href="http://dev.21tx.com/dotnet/aspnet/datagrid/" target="_blank">datagrid</a>
private void bindgrid()
{
//创建arraylist来保存cacheditem信息
arraylist al = new arraylist();
idictionaryenumerator cacheenum = cache.getenumerator();
while (cacheenum.movenext())
{
al.add(new cacheditem(cacheenum.key.tostring(),cacheenum.value.gettype().tostring()));
}
litcount.text = al.count.tostring();
dgcacheditems.datasource = al;
dgcacheditems.databind();
}
//删除cache项
protected void grid_itemcommand(object sender, datagridcommandeventargs e)
{
hy<a href="http://dev.21tx.com/web/perl/" target="_blank">perl</a>ink l = (hyperlink)e.item.findcontrol("cacheitemname");
//确保我们找到了该项
if(l != null)
{
cache.remove(l.text);
}
this.bindgrid();
}
protected void grid_created(object sender, datagriditemeventargs e)
{
if(e.item.itemtype == listitemtype.item || e.item.itemtype == listitemtype.alternatingitem)
{
((literal)e.item.findcontrol("counter")).text = (e.item.itemindex + 1).tostring();
}
}
private class cacheditem
{
public cacheditem(){}
public cacheditem(string key, string type)
{
this.cachekey = key;
this.cachetype = type;
}
private string _cachekey;
public string cachekey
{
get {return this._cachekey;}
set {this._cachekey = value;}
}
private string _cachetype;
public string cachetype
{
get {return this._cachetype;}
set {this._cachetype = value;}
}
}
//remove all
void lbremoveall_click(object sender, eventargs e)
{
idictionaryenumerator cacheenum = cache.getenumerator();
while (cacheenum.movenext())
{
cache.remove(cacheenum.key.tostring());
}
bindgrid();
}
</script>
<html>
<head>
<title>cache管理器</title>
<style>
td,a,p,span {font-size:9pt;}
.header {background-color:#ededed;text-align:center;font-weight:bold;}
</style>
</head>
<body >
<form runat="server">
浏览、删除缓存
<br/>
数量：
<asp:literal id="litcount" runat="server"></asp:literal>
<br/>
<asp:linkbutton id="lbremoveall" runat="server">清除全部缓存项</asp:linkbutton>
<br/>
<asp:hyperlink id="hlrefresh" text="刷新" runat="server"></asp:hyperlink>
<br/><br/>
<asp:datagrid id="dgcacheditems" runat="server" onitemcommand="grid_itemcommand"
autogeneratecolumns="false" onitemcreated="grid_created">
<headerstyle cssclass="header"></headerstyle>
<columns>
<asp:templatecolumn headertext="数量">
<itemtemplate>
<asp:literal id="counter" runat="server" />
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="键">
<itemtemplate>
<asp:hyperlink id="cacheitemname" runat="server" target="_blank"
text='<%# ((cacheditem)(container.dataitem)).cachekey %>'
navigateurl = '<%# ((cacheditem)(container.dataitem)).cachekey %>'/>
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="类型">
<itemtemplate>
<asp:literal id="cacheitemdatatype" runat="server"
text='<%# ((cacheditem)(container.dataitem)).cachetype %>' />
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="删除">
<itemtemplate>
<asp:linkbutton id="removebutton" text="删除" commandname="removefromcache"
runat="server" />
</itemtemplate>
</asp:templatecolumn>
</columns>
</asp:datagrid>
</form>
</body>
</html>
说明：datagrid中用到了hyperlink web控件，是为了方便本站的管理，其它则不必这样用。
