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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TestControlAdd.aspx.cs" Inherits="TestControlAdd" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<table>
<tr>
<td>
<asp:Button ID="btnAdd" runat="server" Text="Button" onclick="btnAdd_Click" />
<br />
<asp:TextBox ID="txtValue" runat="server"></asp:TextBox>
</td>
<td id="tdlist" runat="server">
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>
</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.Text;
public partial class TestControlAdd : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
void AddOption(int count, string val)
{
//创建HTML代码
for (int i = 0; i < count; i++)
{
RadioButton rdb = new RadioButton();
rdb.ID = "opr" + i.ToString();
string an = Encoding.ASCII.GetString(new byte[] { (byte)(65 + i) });
rdb.Text = an;
if (an == val.Trim())
{
rdb.Checked = true;
}
else
{
rdb.Checked = false;
}
rdb.GroupName = "tmp";
rdb.AutoPostBack = true;
rdb.CheckedChanged += new EventHandler(rdb_CheckedChanged);
tdlist.Controls.Add(rdb);
}
}
void rdb_CheckedChanged(object sender, EventArgs e)
{
RadioButton r = (RadioButton)sender;
if (r.Checked)
{
txtValue.Text = r.Text;
}
}
protected void btnAdd_Click(object sender, EventArgs e)
{
AddOption(4, "B");//添加4个默认值选项为B
}
}