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;
}
}
}
}