> ## Documentation Index
> Fetch the complete documentation index at: https://cometchat-22654f5b-feature-card-builder.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Radio Button Element

> Radio Button Element — CometChat documentation.

The `RadioButtonElement` class is utilised to create a single selection input element in a user interface.

| Name             | Type                 | Description                               |
| ---------------- | -------------------- | ----------------------------------------- |
| **elementId**    | string               | Used to set unique ID for the element     |
| **label**        | string               | Used to set a label for the element       |
| **options**      | List\<OptionElement> | Used to set options for the element       |
| **optional**     | bool                 | Used to set optional flag for the element |
| **defaultValue** | String               | Used to set default value for the element |

***

### Class Usage

Here's how to create an instance of the `RadioButtonElement` class:

<Tabs>
  <Tab title="Dart">
    ```dart theme={null}
    RadioButtonElement(
        elementId: "gender", 
        label: "Gender", 
        options: [
            OptionElement(label: "Male",value: "Male" ),
            OptionElement(label: "Female",value: "Female" ),
        ]
    )
    ```
  </Tab>
</Tabs>