亲密接触ASP.Net(14)
2024-07-10 12:55:24
供稿：网友
，欢迎访问网页设计爱好者web开发。个性化分页(2)
上一节大家没有看到总的结构，这一节，我把代码全部贴出来，大家好好看看。
<%@ page language="c#" %>
<%@ import namespace="system.data" %>
<%@ import namespace="system.data.sql" %>
<html>
<script language="c#" runat="server">
void page_load(object sender, eventargs e)
{
//判断是否隐藏pagerstyle-mode
if (chk1.checked)
{
mydatagrid.pagerstyle.visible=true;
}
else
{
mydatagrid.pagerstyle.visible=false;
}
bindgrid();
}
icollection createdatasource()
{
/*
读取数据库的信息，获得dataview
*/
sqlconnection myconnection = new
sqlconnection("server=localhost;uid=sa;pwd=123456;database=aspcn");
sqldatasetcommand mydatasetcommand = new sqldatasetcommand("select * from
admin_enter order by enter_time desc",myconnection);
dataset ds= new dataset();
mydatasetcommand.filldataset(ds,"admin_enter");
return ds.tables["admin_enter"].defaultview;
}
void pagerbuttonclick(object sender, eventargs e)
{
//获得linkbutton的参数值
string arg = ((linkbutton)sender).commandargument;
switch(arg)
{
case ("next"):
if (mydatagrid.currentpageindex < (mydatagrid.pagecount - 1))
mydatagrid.currentpageindex ++;
break;
case ("prev"):
if (mydatagrid.currentpageindex > 0)
mydatagrid.currentpageindex --;
break;
case ("last"):
mydatagrid.currentpageindex = (mydatagrid.pagecount - 1);
break;
default:
//本页值
mydatagrid.currentpageindex = arg.toint32();
break;
}
bindgrid();
}
void mydatagrid_page(object sender, datagridpagechangedeventargs e)
{
//处理按下数字的方法
bindgrid();
}
void bindgrid()
{
//将dataview绑定到datagrid上去
mydatagrid.datasource = createdatasource();
mydatagrid.databind();
showstats();
}
void showstats()
{
//显示页面信息
lblcurrentindex.text = "当前页数为： " +
((int)mydatagrid.currentpageindex+1);
lblpagecount.text = "总页数是： " + mydatagrid.pagecount;
}
</script>
<body>
<h3><font face="verdana">个性化的分页实例^&^</font></h3>
<form runat=server>
<asp:datagrid id="mydatagrid" runat="server"
allowpaging="true"
pagesize="10"
pagerstyle-mode="numericpages"
pagerstyle-horizontalalign="right"
onpageindexchanged="mydatagrid_page"
bordercolor="black"
borderwidth="1"
gridlines="both"
cellpadding="3"
cellspacing="0"
font-name="verdana"
font-size="8pt"
headerstyle-backcolor="#aaaadd"
alternatingitemstyle-backcolor="#eeeeee"
autogeneratecolumns="false"
>
<property name="columns">
<asp:boundcolumn headertext="工作室成员" datafield="enter_id" />
<asp:boundcolumn headertext="登陆时间" datafield="enter_time" />
</property>
</asp:datagrid>
<p>
<asp:linkbutton id="btnfirst" runat="server"
text="首页"
commandargument="0"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<asp:linkbutton id="btnprev" runat="server"
text="前页"
commandargument="prev"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<asp:linkbutton id="btnnext" runat="server"
text="后页"
commandargument="next"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<asp:linkbutton id="btnlast" runat="server"
text="末页"
commandargument="last"
forecolor="navy"
font-name="verdana" font-size="8pt"
onclick="pagerbuttonclick"
/>
<p>
<asp:checkbox id="chk1" runat="server"
text="显示内置的页数"
font-name="verdana"
font-size="8pt"
autopostback="true"
/>
<p>
<table bgcolor="#eeeeee" cellpadding="6"><tr><td nowrap><font
face="verdana" size="-2">
<asp:label id="lblcurrentindex" runat="server" /><br>
<asp:label id="lblpagecount" runat="server" /><br>
</font></td></tr></table>
</form>
</body>
</html>
上面是全部的源代码，执行后的显示是:
图14-1
按下随便一个键，比如"末页"
图14-2
看，我们的程序就直接到了最后一页，即第5页，我们在下面的"当前页数"可以看到：）
我们再来点击"显示内置的页数"这个复选框，看看：
图14-3
看，我们前两节看到的那些小数字也出来了：）
