RadioButton Control

Definition and Usage

The RadioButton control is used to display a radio button.

Tip: To create a set of radio buttons using data binding, use the RadioButtonList control!

Properties

Property	Description
AutoPostBack	A Boolean value that specifies whether the form should be posted immediately after the Checked property has changed or not. Default is false
Checked	A Boolean value that specifies whether the radio button is checked or not
id	A unique id for the control
GroupName	The name of the group to which this radio button belongs
OnCheckedChanged	The name of the function to be executed when the Checked property has changed
runat	Specifies that the control is a server control. Must be set to "server"
Text	The text next to the radio button
TextAlign	On which side of the radio button the text should appear (right or left)

Example 1

In the following example we declare three RadioButton controls, one Button control, and one Label control in an .aspx file. When the submit button is triggered, the submit subroutine is executed. The submit subroutine may respond in three ways: if the radiobutton with id="red" is selected, the server sends the message "You selected Red" to the Label control. If the radiobutton with id="green" is selected, the server sends the message "You selected Green" to the Label control. If the radiobutton with id="green" is selected, the server sends the message "You selected Blue" to the Label control:

<script runat="server">
  Sub submit(Sender As Object, e As EventArgs)
    if red.Checked then
      Label1.Text="You selected " & red.Text
    elseIf green.Checked then
      Label1.Text="You selected " & green.Text
    elseIf blue.Checked then
      Label1.Text="You selected " & blue.Text
    end if
  End Sub
</script>

<html>
<body>
<form runat="server">
<h3>Select your favorite color:</h3>
<asp:RadioButton id="red" Text="Red" Checked="True" 
GroupName="group_color" runat="server"/>
<br />
<asp:RadioButton id="green" Text="Green"
GroupName="group_color" runat="server"/>
<br />
<asp:RadioButton id="blue" Text="Blue" 
GroupName="group_color" runat="server"/>
<br />
<asp:Button text="Submit" OnClick="submit" runat="server"/>
<br /><br />
<asp:Label id="Label1" runat="server"/>
</form>
</body>
</html>

Jump to: Top of Page or HOME or Printer friendly page

Search W3Schools:

What Others Say About Us

Does the world know about us? Check out these places:

Dogpile Alta Vista MSN Google Excite Lycos Yahoo Ask Jeeves

We Help You For Free. You Can Help Us!

W3Schools is for training only. We do not warrant its correctness or its fitness for use. The risk of using it remains entirely with the user. While using this site, you agree to have read and accepted our terms of use and privacy policy.

How we converted to XHTML

ASP Ecommerce & Shopping Cart

Your own Web Site?

Read W3Schools
Hosting Tutorial

$15 Domain Name
Registration
Save $20 / year!

Advertise
at W3Schools

Only 0.5 CPM

SELECTED LINKS

University Online
Master Degree
Bachelor Degree

Web Software

The Future of
Web Development

Jobs and Careers

Web Security
Web Statistics
Web Standards

PARTNERS

W3Schools
TopXML
VisualBuilder
XMLPitstop
DevelopersDex
DevGuru
Programmers Heaven
The Code Project
Tek Tips Forum
ZVON.ORG
TopXML Search