# Ribbon RadioButton
The **RadRibbonRadioButton** represents an extension of the **Microsoft.UI.Xaml.Controls.RadioButton**. It provides an easier interaction with the **RadRibbonView** control. What is special about the **RadRibbonRadioButton** is that it has two states: checked and unchecked. To switch between these states just click on it. Adding several **RadRibbonRadioButtons** to a **RadRibbonGroup** allows you to have only one checked at a time.
> Note that once the button has been checked, it stays in the checked state unless another radio button in the same **RadRibbonGroup** is clicked. If the button is used alone, it can be unchecked after it has been selected once.
**Example 1** demonstrates how we can declare RadRibbonRadioButton in XAML.
> You can access the **RadRibbonRadioButton** control through an alias pointing to the **Telerik.UI.Xaml.Controls** namespace: `xmlns:telerik="using:Telerik.UI.Xaml.Controls"`
#### **Example 1: Declare RibbonRadioButton**
```XAML
```
> tip As all buttons in the RadRibbonView's set slightly expose the same functionality, take a look at the [Overview](https://www.telerik.com/winui/documentation/controls/radribbonview/ribbon-buttons/overview) topic.
This button has its initial size set to **Large** and its text label set to **"Admin"**. As the **IsAutoSize** property is set to **True**, the button will change its size depending on the **RadRibbonGroup's** size.
Here is an example of a **RadRibbonGroup** that contains two **RadRibbonRadioButtons**.
#### **Example 2: Create RibbonGroup with two RibbonRadioButtons**
```XAML
```
## Handling Changes in the Button's Checked State
Besides the **Click** event, the **RadRibbonRadioButton** control exposes two additional events - **Checked** and **Unchecked.** They are meant to notify for changes in the checked state of the radio button.
#### **Example 2: Subscribe to Checked/UnChecked event of the RadRibbonRadioButton**
```XAML
```
#### **Example 3: Checked/UnChecked event handler**
```C#
private void RadRibbonRadioButton_Checked(object sender, RoutedEventArgs e)
{
}
private void RadRibbonRadioButton_Unchecked(object sender, RoutedEventArgs e)
{
}
```
## See Also
* [RadRibbonToggleButton](https://www.telerik.com/winui/documentation/controls/radribbonview/ribbon-buttons/toggle-button)