这是一个应用程序，从下拉列表中选择适当的选项相应的策略 显示在GridView中。此GridView有一列RadioButtons，选中后可以更新特定策略。使用TemplateField添加RaidioButtons列。 我面临的问题是，当我选择RadioButton并单击Update Button时，Checked属性中的值始终为“false”（显示在文本框中）。前端代码（aspx文件）如下： -
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SimpleForm.aspx.cs" Inherits="Test.SimpleForm" %>
<!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">
<script language="javascript" type="text/javascript">
function SelectSingleRadiobutton(rdbtnid) {
var rdBtn = document.getElementById(rdbtnid);
var rdBtnList = document.getElementsByTagName("input");
for (i = 0; i < rdBtnList.length; i++) {
if (rdBtnList[i].type == "radio" && rdBtnList[i].id != rdBtn.id) {
rdBtnList[i].checked = false;
}
}
}
</script>
<title></title>
<style type="text/css">
body
{
background-color:White;
}
#form1{
text-align: center;
/*width: 500px;*/
background: white;
margin: 0px auto;
padding: 5px;
font-family: verdana,geneva,sans-serif;
font-size:13px;
}
#form1 .label {
text-align: right;
display: block;
margin: 10px 0px 10px 10px;
width:40%;
}
#form1 .input{
text-align: left;
display: block;
margin: 10px 0 10px 10px;
width:40%;
margin-left:10px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<fieldset style=" border:0px;">
<div class="row" style=" width:100%;">
<div class="label" style=" width:100% ; text-align:center; font-size:20px;">
<asp:Label ID="Label" runat="server"
Text="Backup Policies"></asp:Label>
</div>
</div>
<div class="row" style=" width:100%;">
<div class="label" style="float:left;">
<asp:Label ID="Label2" runat="server" Text="Application Name :"></asp:Label>
</div>
<div class="input" style=" float:left; margin-left:20px; width:20%">
<asp:DropDownList ID="AppNameDropDown" runat="server" Height="28px" Width="250px"
DataSourceID="AppNameDataSource" DataTextField="AppName" DataValueField="AppName">
<asp:ListItem Text="Dropdown1"></asp:ListItem>
<asp:ListItem Text="Dropdown2"></asp:ListItem>
<asp:ListItem Text="Dropdown3"></asp:ListItem>
</asp:DropDownList>
<asp:SqlDataSource ID="AppNameDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:new_inventoryConnectionString %>"
SelectCommand="SELECT AppName, AppID FROM tblApplication ORDER BY AppName">
</asp:SqlDataSource>
</div>
<div id="PolicyButton" style=" float:left; margin: 10px 0 10px 10px;">
<asp:Button ID="ShowPolicyButton" runat="server" Text="Show Policies"
Width="89px" onclick="ShowPolicyButton_Click" /></div>
</div>
<div id ="UpdateAdd" style=" margin: 40px 0 10px 10px;">
<asp:Button ID="UpdateButton" runat="server" Text="Update"
style =" margin-right: 40px;" onclick="UpdateButton_Click" Visible="False"/>
<asp:Button ID="AddButton" runat="server" Text="Add" Visible="False" />
</div>
<div id="view" style=" margin-top:30px">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" CellPadding="4" ForeColor="#333333"
GridLines="None">
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:RadioButton ID = "chkid" runat = "server" GroupName="policy"
OnClick="javascript:SelectSingleRadiobutton(this.id); "
Visible="True" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="SrvIP" HeaderText="SrvIP" SortExpression="SrvIP" />
<asp:BoundField DataField="PolicyName" HeaderText="PolicyName"
SortExpression="PolicyName" />
<asp:BoundField DataField="DCCall" HeaderText="DCCall"
SortExpression="DCCall" />
<asp:BoundField DataField="Freq" HeaderText="Freq" SortExpression="Freq" />
<asp:BoundField DataField="Time" HeaderText="Time" SortExpression="Time" />
<asp:BoundField DataField="App" HeaderText="App" SortExpression="App" />
<asp:BoundField DataField="DB" HeaderText="DB" SortExpression="DB" />
<asp:BoundField DataField="Web" HeaderText="Web" SortExpression="Web" />
<asp:BoundField DataField="FS" HeaderText="FS" SortExpression="FS" />
<asp:CheckBoxField />
</Columns>
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F5F7FB" />
<SortedAscendingHeaderStyle BackColor="#6D95E1" />
<SortedDescendingCellStyle BackColor="#E9EBEF" />
<SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:new_inventoryConnectionString %>"
SelectCommand="SELECT [SrvIP], [PolicyName], [DCCall], [Freq], [Time],[App] ,[DB] ,[Web] , [FS] FROM [View_BackupPolicy] WHERE ([AppName] LIKE '%' + @AppName + '%')">
<SelectParameters>
<asp:FormParameter FormField="AppNameDropDown" Name="AppName" Type="String" />
</SelectParameters>
</asp:SqlDataSource>
<br />
</div>
</fieldset>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</form>
<p>
</p>
</body>
</html>
这是背后的代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
namespace Test
{
public partial class SimpleForm : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
GridView1.Visible = false;
}
protected void ShowPolicyButton_Click(object sender, EventArgs e)
{
GridView1.Visible = true;
UpdateButton.Visible = true;
AddButton.Visible = true;
}
protected void UpdateButton_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
RadioButton chkid = (RadioButton)row.FindControl("chkid");
String check = chkid.ToString();
bool i = chkid.Checked;
//TextBox1.Text = check;
TextBox1.Text = i.ToString();
}
/*if (chkid.Checked)
{
string s = chkid.Text;
TextBox1.Text =s;
}
else
{
TextBox1.Text ="false";
}*/
}
}
}
我读了几个关于这个问题的问题，但他们都在Page_Load函数中完成了这个问题，因此使用IsPostBack解决了他们的问题。
有人能告诉我为什么会出现这个问题。