RadioButton Class
Assembly: System.Web (in system.web.dll)
The RadioButton server control permits you to intersperse the radio buttons in a group with other content in the page. The buttons are grouped logically if they all share the same GroupName property.
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| You can use the RadioButton control to display user input, which might include malicious client script. Check any information that is sent from a client for executable script, SQL statements, or other code before displaying it in your application. ASP.NET provides an input request validation feature to block script and HTML in user input. Validation server controls are also provided to assess user input. For more information, see Validation Server Controls. |
Accessibility
The markup rendered by default for this control might not conform to accessibility standards such as the Web Content Accessibility Guidelines 1.0 (WCAG) priority 1 guidelines. For details about accessibility support for this control, see ASP.NET Controls and Accessibility.
The following code example illustrates how to use the RadioButton control.
<%@ Page Language="C#" AutoEventWireup="True" %> <!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> <title>RadioButton Example</title> <script language="C#" runat="server"> void SubmitBtn_Click(Object Sender, EventArgs e) { if (Radio1.Checked) { Label1.Text = "You selected " + Radio1.Text; } else if (Radio2.Checked) { Label1.Text = "You selected " + Radio2.Text; } else if (Radio3.Checked) { Label1.Text = "You selected " + Radio3.Text; } } </script> </head> <body> <h3>RadioButton Example</h3> <form id="form1" runat="server"> <h4>Select the type of installation you want to perform:</h4> <asp:RadioButton id="Radio1" Text="Typical" Checked="True" GroupName="RadioGroup1" runat="server" /><br /> This option installs the features most typically used. <i>Requires 1.2 MB disk space.</i><br /> <asp:RadioButton id="Radio2" Text="Compact" GroupName="RadioGroup1" runat="server"/><br /> This option installs the minimum files required to run the product. <i>Requires 350 KB disk space.</i><br /> <asp:RadioButton id="Radio3" runat="server" Text="Full" GroupName="RadioGroup1" /><br /> This option installs all features for the product. <i>Requires 4.3 MB disk space.</i><br /> <asp:button text="Submit" OnClick="SubmitBtn_Click" runat="server"/> <asp:Label id="Label1" font-bold="true" runat="server" /> </form> </body> </html>
- AspNetHostingPermission for operating in a hosted environment. Demand value: LinkDemand; Permission value: Minimal.
- AspNetHostingPermission for operating in a hosted environment. Demand value: InheritanceDemand; Permission value: Minimal.
System.Web.UI.Control
System.Web.UI.WebControls.WebControl
System.Web.UI.WebControls.CheckBox
System.Web.UI.WebControls.RadioButton
