当GridView中显示的记录很多的时候，可以通过GridView的分页功能来分页显示这些记录。如果GridView是直接绑定数据库，则很简单：只要点击GridView控件左上角的小三角形，再弹出的选项中，将"启动分页"打上勾即可。
如果是用代码实现，则需要这么做：
1、允许分页：设置AllowPaging=True；
2、设置GridView属性栏中PagerSetting里的一些属性中，定义分页的样式；
3、数据部署：将数据显示到GridView上；
4、加入相关事件：PageIndexChanged()、PageIndexChanging()；
5、如果要添加分页码显示，即显示当前在第几页，还需添加DataBound()事件。
例子：
功能：GridView分页使用图片按钮并添加分页码显示。
默认情况下GridView的分页按钮如果以图片来显示就无法显示文字，这样就无法知道当前所在的页数。于是，添加分页代码显示就可以显示所在分页的索引数字了。
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class GridView_Page : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//设置分页的图片按钮，这些都可以在控件的属性表上的pagersetting里设置
if (!IsPostBack)
{
GridView1.Caption = "这是一个GridView的小实验";
//Caption属性类似于表名，显示在控件的正上方。
GridView1.PagerSettings.Mode = PagerButtons.NextPreviousFirstLast;
GridView1.PagerSettings.NextPageImageUrl = "img/next.gif";
GridView1.PagerSettings.PreviousPageImageUrl = "img/pre.gif";
GridView1.PagerSettings.FirstPageImageUrl = "img/first.gif";
GridView1.PagerSettings.LastPageImageUrl = "img/last.gif";
GridView1.PageSize = 10; //每页最多显示10条记录；
BindData();
}
}
private void BindData()
{
//将数据部署到GridView中
string Constr = "server=localhost; uid=sa;pwd=123456;database=NorthWind";
string sqlstr = "select * from products";
SqlConnection con = new SqlConnection(Constr);
SqlDataAdapter ad = new SqlDataAdapter(sqlstr, con);
DataSet ds = new DataSet();
ad.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
}
protected void GridView1_PageIndexChanged(object sender, EventArgs e)
{
//进行分页之后，重新部署数据
BindData();
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
//分页完成之前
GridView1.PageIndex = e.NewPageIndex;
}
protected void GridView1_DataBound(object sender, EventArgs e)
{
//添加分页码显示
GridViewRow bottomPagerRow = GridView1.BottomPagerRow;
Label bottomLabel = new Label();
bottomLabel.Text = "目前所在分页：（" + (GridView1.PageIndex + 1) + "/" + GridView1.PageCount + "）";
bottomPagerRow.Cells[0].Controls.Add(bottomLabel);
}
}
- 启动分页：
- <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" AutoGenerateColumns="False" PageSize="8">
<PagerSettings Visible="False" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#EFF3FB" />
<Columns>
<asp:BoundField DataField="id" HeaderText="学号" />
<asp:BoundField DataField="name" HeaderText="姓名" />
<asp:BoundField DataField="sex" HeaderText="性别" />
<asp:BoundField DataField="age" HeaderText="年龄" />
<asp:BoundField DataField="department" HeaderText="专业" />
<asp:BoundField DataField="grade" HeaderText="年级" />
</Columns>
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
<asp:LinkButton ID="lnkbtnFirst" runat="server" onclick="PagerButtonClick">首页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnPre" runat="server" onclick="PagerButtonClick">上一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnNext" runat="server" onclick="PagerButtonClick">下一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnLast" runat="server" onclick="PagerButtonClick">尾页</asp:LinkButton>
<asp:Label ID="lblCurrentIndex" runat="server" Text="第？页"></asp:Label>
<asp:Label ID="lblPageCount" runat="server" Text="共？页"></asp:Label>
<asp:Label ID="lblRecordCount" runat="server" Text="记录数"></asp:Label>
<asp:TextBox ID="txtJumpPage" runat="server" Width="24px">1</asp:TextBox>
<asp:LinkButton ID="lnkbtnJumpPage" runat="server"
onclick="lnkbtnJumpPage_Click">跳转</asp:LinkButton>
