ASP.net基础编程2— DataList下表单分页

最新推荐文章于 2025-10-26 14:37:52 发布

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showProduct_dataList2 .aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="showProduct_dataList2 .aspx.cs" Inherits="showProduct_dataList" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:DataList ID="dl_showProduct" runat="server" CellPadding="4" DataKeyField="ProductID" ForeColor="#333333" RepeatColumns="4" RepeatDirection="Horizontal" OnItemCommand="dl_showProduct_ItemCommand" OnItemDataBound="dl_showProduct_ItemDataBound">
            <AlternatingItemStyle BackColor="White" ForeColor="#284775" />
            <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <%--页脚分页开始--%>
            <footertemplate>
                共<asp:label id="totalPage" runat="server" text="totalPage"></asp:label>页
                第<asp:label id="currentPage" runat="server" text="currentPage"></asp:label>页

                <asp:linkbutton id="lb_firstPage" runat="server" CommandName="lb_firstPage">首页</asp:linkbutton>
                <asp:linkbutton id="lb_prePage" runat="server" CommandName="lb_prePage">上一页</asp:linkbutton>
                <asp:linkbutton id="lb_nextPage" runat="server" CommandName="lb_nextPage">下一页</asp:linkbutton>
                <asp:linkbutton id="lb_lastPage" runat="server" CommandName="lb_lastPage">尾页</asp:linkbutton>
                跳转到第<asp:TextBox ID="tb_search" runat="server"></asp:TextBox>页<asp:Button ID="btn_search" runat="server" Text="GO" CommandName="search" />
            </footertemplate>
             <%--页脚分页结束--%>
            <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
            <ItemStyle BackColor="#F7F6F3" ForeColor="#333333" />
            <ItemTemplate>
                <asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("phot", "{0}") %>' Height="100px" Width="100px" />
                <br />
                商品ID:
                <asp:Label ID="ProductIDLabel" runat="server" Text='<%# Eval("ProductID") %>' />
                <br />
                商品名称:
                <asp:Label ID="ProductNameLabel" runat="server" Text='<%# Eval("ProductName") %>' />
                <br />
                库存量:
                <asp:Label ID="QuantityLabel" runat="server" Text='<%# Eval("Quantity") %>' />
                <br />
                单价:
                <asp:Label ID="UnitLabel" runat="server" Text='<%# Eval("Unit") %>' />
                <br /><br />
                <asp:ImageButton ID="ImageButton1" runat="server" ImageUrl='~/images/goumai.jpg' Width="100px" />
                <br />
            </ItemTemplate>
            <SelectedItemStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
        </asp:DataList>
        </div>
    </form>
    
</body>
</html>

showProduct_dataList2 .aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;

public partial class showProduct_dataList : System.Web.UI.Page
{

    protected static PagedDataSource ps = new PagedDataSource(); // 分页数据源对象

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataBind(0);
        }
        
    }

    private void DataBind(int CurrentPage) // 参数：页码
    {
        String strconn = System.Configuration.ConfigurationManager.ConnectionStrings["shopdataConnectionString"].ToString();
        SqlConnection conn = new SqlConnection();
        conn.ConnectionString = strconn;
        conn.Open(); // 打开连接

        string str = "select * from dbo.Product;";
        SqlDataAdapter myadapt = new SqlDataAdapter(str, conn);

        DataSet myds = new DataSet(); // 分页数据源
        myadapt.Fill(myds, "mytab");


        // 定义分页数据源的相关属性
        ps.AllowPaging = true; // 允许分页
        ps.PageSize = 12; // 每页显示条数
        ps.DataSource = myds.Tables["mytab"].DefaultView; // 分页数据源的数据源
        ps.CurrentPageIndex = CurrentPage; // 当前页码

        dl_showProduct.DataSource = ps; // <asp: DataList ID="dl_showProduct"> </asp: DataList>
        dl_showProduct.DataBind(); // 数据绑定

    }
    protected void dl_showProduct_ItemCommand(object source, DataListCommandEventArgs e)
    {
        switch (e.CommandName) {
            case "lb_firstPage":
                {
                ps.CurrentPageIndex = 0;
                DataBind(ps.CurrentPageIndex);
                break;
            }
            case "lb_prePage":
                {
                    if (ps.IsFirstPage)
                    {
                        ps.CurrentPageIndex = 0;
                    }
                    else
                    {
                        ps.CurrentPageIndex = ps.CurrentPageIndex - 1;
                    }
                    DataBind(ps.CurrentPageIndex);
                    break;
                }
            case "lb_nextPage":
                {
                    if (ps.IsLastPage)
                    {
                        ps.CurrentPageIndex = ps.PageCount - 1;
                    }
                    else
                    {
                        ps.CurrentPageIndex = ps.CurrentPageIndex + 1;
                    }
                    //ps.CurrentPageIndex = ps.CurrentPageIndex + 1;
                    DataBind(ps.CurrentPageIndex);
                    break;
                }
            case "lb_lastPage":
                {
                    ps.CurrentPageIndex = ps.PageCount - 1;
                    DataBind(ps.CurrentPageIndex);
                    break;
                }
            case "search":
                {
                    TextBox tb_search = e.Item.FindControl("tb_search") as TextBox;
                    int index = Convert.ToInt32(tb_search.Text.ToString()); // 第 index 页
                    DataBind(index - 1);
                    break;
                }
        }
    }

    protected void dl_showProduct_ItemDataBound(object sender, DataListItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.Footer)   //获取FooterTemplate中的Label
        {
            Label total = e.Item.FindControl("totalPage") as Label;
            total.Text = ps.PageCount.ToString(); // 共。页

            Label current = e.Item.FindControl("currentPage") as Label;
            current.Text = ps.CurrentPageIndex + 1 + ""; // 第。页
        }
    }
}