# Events

The Buttons expose a set of events that are raised on different occasions.

* `Click`—Fires when the button is clicked. This event is exposed by all buttons from the suite.

#### **Click event handler**

```C#
	private void RadButton_Click(object sender, RoutedEventArgs e)
	{
	}
```

* `Checked`—Fires when a toggle-based button is checked. This event is exposed by `RadToggleButton`, `RadRadionButton` and `RadSplitButton`.

#### **Checked event handler**

```C#
private void RadToggleButton_Checked(object sender, RoutedEventArgs e)
{
}
```

* `Unchecked`—Fires when a toggle-based button is unchecked. This event is exposed by `RadToggleButton`, `RadRadionButton` and `RadSplitButton`.

#### **Unchecked event handler**

```C#
private void RadToggleButton_Unchecked(object sender, RoutedEventArgs e)
{
}
```

* `Indeterminate`—Fires when a toggle-based button goes in indeterminate state. This event is exposed by `RadToggleButton` and `RadRadionButton`.

#### **Indeterminate event handler**

```C#
private void RadToggleButton_Indeterminate(object sender, RoutedEventArgs e)
{
}
```

* `DropDownOpening`—Fires when the drop down content of a drop-down-based button is about to open. This event is exposed by `RadDropDownButton` and `RadSplitButton`.

#### **DropDownOpening event handler**

```C#
private void RadToggleButton_DropDownOpening(object sender, RoutedEventArgs e)
{
}
```

* `DropDownOpened`—Fires when the drop down content of a drop-down-based button gets opened. This event is exposed by `RadDropDownButton` and `RadSplitButton`.

#### **DropDownOpened event handler**

```C#
private void RadToggleButton_DropDownOpened(object sender, RoutedEventArgs e)
{
}
```

* `DropDownClosed`—Fires when the drop down content of a drop-down-based button gets closed. This event is exposed by `RadDropDownButton` and `RadSplitButton`.

#### **DropDownClosed event handler**

```C#
private void RadToggleButton_DropDownClosed(object sender, RoutedEventArgs e)
{
}
```

## See Also

* [Getting Started](https://www.telerik.com/winui/documentation/controls/radbuttons/getting-started)
* [Commands](https://www.telerik.com/winui/documentation/controls/radbuttons/commands)