ASP.NET RadioButtonControl
Web Server Control
Definition and Usage
The RadioButton control is used to display a radio button.
Tip:To create a series of radio buttons using data binding, use the RadioButtonList control!
Properties
| Property | Description |
|---|---|
| AutoPostBack | Boolean value that specifies whether to post back the form immediately after the Checked property is changed. Default is false. |
| Checked | Boolean value that specifies whether the radio button is selected. |
| id | The unique id of the control. |
| GroupName | The name of the control group to which this radio button belongs. |
| OnCheckedChanged | The name of the function to be executed when the Checked property is changed. |
| runat | Specifies that the control is a server control. Must be set to "server". |
| Text | The text next to the radio button. |
| TextAlign | Which side of the radio button the text should appear on (left or right). |
Example
Radiobutton
In this example, we declare three RadioButton controls, a Button control, and a Label control in the .aspx file. When the submit button is triggered, the submit subroutine is executed. The submit subroutine responds 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 "You selected Green"; if the radiobutton with id="blue" is selected, the server sends "You selected Blue".
Web Server Control Other Extensions