实体类：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// gouwu 的摘要说明
/// </summary>
public class gouwu
{
public gouwu()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public int ids { get; set; }
public string pic { get; set; }
public string name { get; set; }
public decimal nowprice { get; set; }
public decimal oldprice { get; set; }
public string context { get; set; }
}
数据访问类：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.SqlClient;
/// <summary>
/// gouwudata 的摘要说明
/// </summary>
public class gouwudata
{
SqlConnection conn = null;
SqlCommand cmd = null;
public gouwudata()
{
conn = new SqlConnection("server=.;database=data0928;user=sa;pwd=123");
cmd = conn.CreateCommand();
}
public List<gouwu> select()
{
List<gouwu> glist = new List<gouwu>();
cmd.CommandText = "select*from gouwu";
conn.Open();
SqlDataReader dr = cmd.ExecuteReader();
if (dr.HasRows)
{
while (dr.Read())
{
gouwu g = new gouwu();
g.ids = Convert.ToInt32(dr[0]);
g.pic = dr[1].ToString();
g.name = dr[2].ToString();
g.nowprice = Convert.ToDecimal(dr[3]);
g.oldprice = Convert.ToDecimal(dr[4]);
g.context = dr[5].ToString();
glist.Add(g);
}
}
conn.Close();
return glist;
}
public void delete(int ids)
{
cmd.CommandText = "delete from gouwu where ids=‘"+ids+"‘";
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}
}
aspx里：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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>
<style>
* {
padding:0px;
margin:0px;
}
#header {
width:100%;
height:80px;
background-color:navy;
position:relative;
}
#footer {
width:100%;
height:80px;
background-color:black;
position:relative;
}
#items {
width:80%;
margin-left:10%;
position:relative;
}
.item {
position:relative;
width:23.5%;
margin-left:0.5%;
margin-right:0.5%;
height:295px;
margin-top:5px;
border:solid 1px;
float:left;
margin-bottom:5px;
}
.item img {
position:relative;
width:100%;
height:60%;
}
.itemname {
position:relative;
width:80%;
margin-left:10%;
font-size:18px;
}
.itemprice {
position:relative;
width:100%;
color:red;
text-align:right;
font-size:18px;
}
.itemprice span {
font-size:12px;
text-decoration:line-through;
}
.itemcon {
position:relative;
width:90%;
margin-left:5%;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div id="header"></div>
<div id="items">
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<div class="item">
<img src="<%#Eval("pic") %>" />
<div class="itemname"><%#Eval("name") %></div>
<div class="itemprice">价格：<%#Eval("nowprice") %><span><%#Eval("oldprice") %></span></div>
<div class="itemcon"><%#Eval("context") %></div>
<asp:Button ID="Button1" runat="server" Text="删除" CommandName="delete" CommandArgument=‘<%#Eval("ids") %>‘ /><%--repeater的command方法--%>
</div>
</ItemTemplate>
</asp:Repeater>
<div style="clear:both"></div>//使高度自适应
</div>
<div id="footer"></div>
</form>
</body>
</html>
cs里：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Repeater1.DataSource = new gouwudata().select();
Repeater1.DataBind();
}
Repeater1.ItemCommand += Repeater1_ItemCommand;
}
void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "delete")//repeater的command方法
{
new gouwudata().delete(Convert.ToInt32(e.CommandArgument));//repeater的command方法
Repeater1.DataSource = new gouwudata().select();//删除后及时刷新数据
Repeater1.DataBind();
}
}
}
如何不用repeater展示数据：
aspx中：用literal
<body style="font-family: 微软雅黑;">
<form id="form1" runat="server">
<div id="header">
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
<div id="items">
<asp:Literal ID="Literal1" runat="server"></asp:Literal>
<div style="clear: both;"></div>
</div>
<div id="footer"></div>
</form>
</body>
cs中：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Literal1.Text = DataBind();
}
}
public string DataBind()
{
string end = "";
List<gouwu> glist = new gouwuData().Select();
foreach (gouwu g in glist)
{
if (g.name == "猕猴桃")
{
continue;
}
end += "<div class=\"item\">";
end += "<img src=\"" + g.pic + "\" />";
end += " <div class=\"item-name\">" + g.name + "</div>";
end += "<div class=\"item-price\">价格：" + g.nowPrice + "<span>" + g.oldPrice + "</span></div>";
end += "<div class=\"item-context\">" + g.context + "</div>";
end += "<a href=\"Delete.aspx?id=" + g.ids + "\">删除</a>";
end += "</div>";
}
return end;
}
}
时间： 2024-12-19 05:56:19