在转发器控制中维护不同页面上的选中值 [英] Maintain checked values across different pages in repeater control
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问题描述
I have a Datalist Control, where there are multiple rows(3 rows per page).Each row has a checkbox as well. My requirement is that I want the checked items to come down in the Repeater control when I press the "Checkout" Button. But when I go to the next page the checked items on the previous page gets reset.
我尝试过的方法：
What I have tried:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" MaintainScrollPositionOnPostback="true" %>
<!DOCTYPE html>
<title>DL-A1
<div>
<asp:DataList ID="DataList1" runat="server" DataKeyField="bookid">
<itemtemplate>
<table><tbody><tr><td>
</td><td>
Title: <%# Eval("booktit") %><br>
Author: <%# Eval("bookaut") %><br>
Publisher: <%# Eval("bookpub") %><br>
Prc: <%# Eval("bookprc") %><br>
<asp:CheckBox ID="CheckBox1" runat="server" Text="Buy" Font-Bold="True" /><br>
</td></tr></tbody></table>
<asp:Repeater ID="rptPaging" runat="server" OnItemCommand="rptPaging_ItemCommand">
<itemtemplate>
<asp:LinkButton ID="lnkPage" runat="server" CommandName="Page" CommandArgument="<%# Container.DataItem %>"><%# Container.DataItem %>
<br>
<asp:Label ID="lbl1" runat="server" Text="Label" Font-Bold="True">
<br>
<br>
<asp:Button ID="Button1" runat="server" Text="Checkout" OnClick="extractCheckedVal" Font-Bold="True" Font-Size="X-Large" /><br><br><br>
<asp:Repeater ID="Repeater1" runat="server">
<headertemplate>
Total number of checked items: <%= v_tot %> <br>
Selected Items Are:
<itemtemplate>
<table><tbody><tr><td>
</td><td>
Title: <%# Eval("booktit") %><br>
Author: <%# Eval("bookaut") %><br>
Publisher: <%# Eval("bookpub") %><br>
Prc: <%# Eval("bookprc") %><br>
</td></tr></tbody></table>
</div>
推荐答案
这是转发器控件的工作方式，
如果你需要保持状态，你将不得不将当前页面检查的值存储到会话[页码，检查项目ID]，然后在每个页面上数据绑定事件，您将不得不查看会话表示存储的值并进行相应的检查。
This is how the repeater control works,
if you need to maintain the state, you will have to store the current page checked values into a session [ page number, checked items id ], then on each pagedata bindevent you will have to look into thesessionfor the stored values and check it accordingly.
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