为什么这段代码的的checkbox没有设置为autopostback=true却可以改变checkbox.checked属性
我觉得很奇怪：
为什么这段代码的的checkbox没有设置为autopostback=true却可以改变checkbox.checked属性？？？
代码里面的 <asp:CheckBox ID="chkItem" runat="server" /> 明明就没有autopostback，但为什么
后台的
for (int i = 0; i < this.Repeater1.Items.Count; i++)
{
CheckBox cbox = (CheckBox)this.Repeater1.Items[i].FindControl("chkItem");
if (cbox.Checked == true)
..................................
}
却可以读出checked==true
好奇怪，求解释！！
/////////////////////前台
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="PagedDataSourceTest.WebForm2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Repeater控件使用</title>
</head>
<body>
<form id="form1" runat="server">
<div style="margin-bottom: 20px; text-align: center; width: 1006px;">
Repeater控件使用</div>
<asp:Repeater ID="Repeater1" runat="server">
<HeaderTemplate>
<table border="1" cellpadding="0" cellspacing="0" style="width: 1006px; border-collapse: collapse;
text-align: center;">
<tr>
<td style="background-color: #cccccc; font-weight: bold; height: 25px;">
选择
</td>
<td style="background-color: #cccccc; font-weight: bold; height: 25px;">
id隐藏
</td>
<td style="background-color: #cccccc; font-weight: bold; height: 25px;">
货物名
</td>
<td style="background-color: #cccccc; font-weight: bold; height: 25px;">
价格
</td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<asp:CheckBox ID="chkItem" runat="server" />
</td>
<td style="display: none">
<asp:Label ID="lblID" Text='<%# DataBinder.Eval(Container.DataItem, "id")%>' runat="server"></asp:Label>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem, "goodsName")%>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem, "goodsPrice")%>
</td>
</tr>
</ItemTemplate>
<%--AlternatingItemTemplate描述交替输出行的另一种外观--%>
<AlternatingItemTemplate>
<tr bgcolor="#e8e8e8">
<td>
<asp:CheckBox ID="chkItem" runat="server" />
</td>
<td style="display: none">
<asp:Label ID="lblID" Text='<%# DataBinder.Eval(Container.DataItem, "id")%>' runat="server"></asp:Label>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem, "goodsName")%>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem, "goodsPrice")%>
</td>
</tr>
</AlternatingItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<div style="background-color: #dedede; width: 1006px;">
<asp:HyperLink ID="HyperLinkPre" runat="server">上页</asp:HyperLink>
<asp:HyperLink ID="HyperLinkNext" runat="server">下页</asp:HyperLink>第
<asp:Label ID="Label1" runat="server"></asp:Label>
页 共
<asp:Label ID="lblTotalPage" runat="server"></asp:Label>页
</div>
<div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="btnDel_Click" />
</div>
</form>
</body>
</html>
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;
namespace PagedDataSourceTest
{
public partial class WebForm2 : System.Web.UI.Page
{
MyDatabase dbHelper = new MyDatabase();
PagedDataSource PDS = new PagedDataSource();
// private string ConnStr = ConfigurationManager.AppSettings["dbConnectionString"];
private string strsql = "";
protected void Page_Load(object sender, EventArgs e)
{
if (!this.Page.IsPostBack)
{
this.bind();
}
}
private void bind()
{
DataTable myTb = dbHelper.GetDataTable("select * from tbGoods");
DataView dv = myTb.DefaultView;
PDS.DataSource = dv;
PDS.AllowPaging = true;
PDS.PageSize = 5;
/////新的分页
lblTotalPage.Text = PDS.PageCount.ToString();//总页数
int currentPage;//当前页
if (Request.QueryString["Page"] != null)
{
currentPage = Convert.ToInt32(Request.QueryString["Page"]);
}
else//没有page参数的话就是第一页
{
currentPage = 1;
}
PDS.CurrentPageIndex = currentPage - 1;
Label1.Text = currentPage.ToString();
if (PDS.IsFirstPage == false)//不是第一页
{
HyperLinkPre.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" +
Convert.ToString(currentPage - 1);
}
if (PDS.IsLastPage == false)//不是最后一页
{
HyperLinkNext.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" +
Convert.ToString(currentPage + 1);
}
//////////////////////////////////////
Repeater1.DataSource = PDS;
Repeater1.DataBind();
}
protected void btnDel_Click(object sender, EventArgs e)
{
string ID = "";
for (int i = 0; i < this.Repeater1.Items.Count; i++)
{
CheckBox cbox = (CheckBox)this.Repeater1.Items[i].FindControl("chkItem");
if (cbox.Checked == true)
{
if (ID == "")
{
ID = "'" + ((Label)this.Repeater1.Items[i].FindControl("lblID")).Text + "'";
}
else
{
ID += "," + "'" + ((Label)this.Repeater1.Items[i].FindControl("lblID")).Text + "'";
}
}
}
strsql = "delete from tbGoods where id in (" + ID + ")";
try
{
dbHelper.ExcuteSql(strsql);
System.Web.HttpContext.Current.Response.Write("<script language='javascript'>alert('刪除成功!');</script>");
}
catch (System.Data.SqlClient.SqlException E)
{
throw new Exception(E.Message);
}
finally
{
}
this.bind();
}
}
}
