asp.net 分页显示数据表的数据的代码

实现代码如下：

using system;
using system.collections;
using system.configuration;
using system.data;
using system.linq;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.htmlcontrols;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;
using system.xml.linq;
using system.drawing;
namespace showdata4
{
public partial class _default : system.web.ui.page
{
protected void page_load(object sender, eventargs e)
{
gridview1.pagesize = 5; /*gridview控件在每页上显示的记录数目*/
if (gridview1.rows.count != 0) /*当记录数只显示一页时加载分页标签*/
{
control table = gridview1.controls[0];
int count = table.controls.count;
table.controls[count - 1].visible = true;
}
}
protected void gridview1_rowcreated(object sender, gridviewroweventargs e)
{
if (e.row.rowtype == datacontrolrowtype.pager) /*显示页导航控件的行*/
{
/*创建在网页上显示超链接的按钮*/
linkbutton button_indexfirst = new linkbutton();
linkbutton button_indexlast = new linkbutton();
linkbutton button_indexnext = new linkbutton();
linkbutton button_indexprevious = new linkbutton();
/*添加超链接按钮到页导航行*/
e.row.controls[0].controls.add(button_indexfirst);
e.row.controls[0].controls.add(new literalcontrol(("  "))); /*分页按钮之间用2个空格隔开*/
e.row.controls[0].controls.add(button_indexprevious);
e.row.controls[0].controls.add(new literalcontrol(("  ")));
e.row.controls[0].controls.add(button_indexnext);
e.row.controls[0].controls.add(new literalcontrol(("  ")));
e.row.controls[0].controls.add(button_indexlast);
button_indexfirst.text = "第一页";
button_indexfirst.commandname = "first";
button_indexfirst.click += new eventhandler(pagebuttonclick);
button_indexprevious.text = "上一页";
button_indexprevious.commandname = "previous";
button_indexprevious.click += new eventhandler(pagebuttonclick);
button_indexnext.text = "下一页";
button_indexnext.commandname = "next";
button_indexnext.click += new eventhandler(pagebuttonclick);
button_indexlast.text = "最后一页";
button_indexlast.commandname = "last";
button_indexlast.click += new eventhandler(pagebuttonclick);
if (gridview1.pageindex == 0)
{
if (gridview1.pagecount > 1) /*记录数所需页数大于一页*/
{
button_indexfirst.enabled = false;
button_indexprevious.enabled = false;
}
else /*记录数只需一页*/
{
button_indexfirst.enabled = false;
button_indexprevious.enabled = false;
button_indexnext.enabled = false;
button_indexlast.enabled = false;
}
}
else if (gridview1.pageindex == gridview1.pagecount - 1)
{
button_indexnext.enabled = false;
button_indexlast.enabled = false;
}
else if (gridview1.pagecount <= 0)
{
response.write("数据表中没有数据！");
button_indexfirst.enabled = false;
button_indexprevious.enabled = false;
button_indexnext.enabled = false;
button_indexlast.enabled = false;
}
}
}
protected void pagebuttonclick(object sender, eventargs e)
{
linkbutton clickedbutton = ((linkbutton)sender);
if (clickedbutton.commandname == "first") /*点击的是“第一页”按钮，页索引为0*/
{
gridview1.pageindex = 0;
}
else if (clickedbutton.commandname == "next") /*点击的是“下一页”按钮，页索引加1*/
{
if (gridview1.pageindex < gridview1.pagecount - 1)
{
gridview1.pageindex += 1;
}
}
else if (clickedbutton.commandname == "previous") /*点击的是“上一页”按钮，页索引如果大于等于1则减1*/
{
if (gridview1.pageindex >= 1)
{
gridview1.pageindex -= 1;
}
}
else if (clickedbutton.commandname == "last") /*点击的是“最后一页”按钮*/
{
gridview1.pageindex = gridview1.pagecount - 1;
}
}
}
}