The RadioButton control use in a group. Means Only one radio button in a group of
RadioButton controls can be checked at a time.
Syntax:
<asp:RadioButton ID="rdlMagazine" Text="Magazine Article" runat="server" />
The RadioButton control supports the following properties (this is not a complete list):
| S.N. |
Property |
Description |
| 1) |
ID |
Set the uniqe value to control to access in code-behind code. |
| 2) |
Text |
This use for set or get value from or to RadioButton control. |
| 3) |
AccessKey |
This property used to specify a key that navigates to the RadioButton control. |
| 4) |
TextAlign |
Align the label for the RadioButton. Possible values are Left and Right. |
| 5) |
AutoPostBack |
Enables we to post the form containing the RadioButton back to the server automatically
when the RadioButton is checked or unchecked. |
| 6) |
Enabled |
This used to enable or disable the RadioButton control. |
| 7) |
TabIndex |
Used to set the tab order of the check box. |
The CheckBox control also supports the following method:
| S.N. |
Method |
Description |
| 1) |
Focus |
Used to set the initial form focus on it. |
The CheckBox control supports the following event:
| S.N. |
Event |
Description |
| 1) |
CheckedChanged |
Raised on the server when the check box is checked or unchecked. |
When the AutoPostBack property has the value True, the form containing the check box is
automatically posted back to the server when the check box is checked or unchecked.
Design Code: RadioButtonDemo01.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="RadioButtonDemo01.aspx.cs"
Inherits="LearnAsp.Net.Control.RadioButton.RadioButtonDemo01" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
How did you hear about our Website?
<ul>
<li>
<asp:RadioButton ID="rdlSocialMedia" Text="Socail Media Sites"
GroupName="Source" runat="server" />
</li>
<li>
<asp:RadioButton ID="rdlMagazine" Text="Magazine Article"
GroupName="Source" runat="server" />
</li>
<li>
<asp:RadioButton ID="rdlTelevision" Text="Television Program"
GroupName="Source" runat="server" />
</li>
<li>
<asp:RadioButton ID="rdlInternetAdd" Text="Internet Advertise"
GroupName="Source" runat="server" />
</li>
<li>
<asp:RadioButton ID="rblNewPaper" Text="News Paper"
GroupName="Source" runat="server" />
</li>
<li>
<asp:RadioButton ID="rdlOther" Text="Other Source"
GroupName="Source" runat="server" />
</li>
</ul>
<asp:Button ID="btnSubmit" Text="Submit" runat="server" OnClick="btnSubmit_Click" />
<hr />
<asp:Label ID="lblResult" runat="server" />
</div>
</form>
</body>
</html>
Code-Behind Code: RadioButtonDemo01.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace LearnAsp.Net.Control.RadioButton
{
public partial class RadioButtonDemo01 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
if (rdlSocialMedia.Checked)
lblResult.Text = rdlSocialMedia.Text;
if (rblNewPaper.Checked)
lblResult.Text = rblNewPaper.Text;
if (rdlMagazine.Checked)
lblResult.Text = rdlMagazine.Text;
if (rdlInternetAdd.Checked)
lblResult.Text = rdlInternetAdd.Text;
if (rdlTelevision.Checked)
lblResult.Text = rdlTelevision.Text;
if (rdlOther.Checked)
lblResult.Text = rdlOther.Text;
}
}
}
Output:
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