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WebForms HTML WebForms Controls WebForms ValidationASP.NET RadioButton Control
Web Server Controls
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
Radiobutton
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.
Web Server Controls
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