# DropDown Button

The `RadDropDownButton` control is a toggle button that opens a drop down presenter on click and closes it on second click. The drop down content can be populated with any element, like a simple text, a list with items or any other complex UI.

The **DropDownButton**'s content is populated using its `Content` property. The drop down part is added via the `DropDownContent` property. Additionally, the contents can be customized using the `ContentTemplate`, `DropDownContentTemplate` and the associated [DataTemplateSelector](https://docs.microsoft.com/en-us/windows/winui/api/microsoft.ui.xaml.controls.datatemplateselector?view=winui-3.0) properties.

The following example shows how to define a button with a `ListBox` in its dropdown content and bind its 'Content' to the `SelectedItem` of the list.

#### **Defining RadDropDownButton**

```XAML
<telerikControls:RadDropDownButton Content="{Binding ElementName=listBox, Path=SelectedItem.Content}" 
								   DropDownWidth="180">
	<telerikControls:RadDropDownButton.DropDownContent>
		<ListBox x:Name="listBox">
			<ListBoxItem Content="Item 1" />
			<ListBoxItem Content="Item 2" />
			<ListBoxItem Content="Item 3" />
		</ListBox>
	</telerikControls:RadDropDownButton.DropDownContent>
</telerikControls:RadDropDownButton>
```

**DropDownButton with opened DropDownContent**

![WinUI RadButtons ](https://www.telerik.com/winui/documentation/assets/785a8c7bd83c34805951020452e4b3df/buttons-dropdown-button-0.png)

The dropdown part of the DropDownButton can be opened or closed manually using the `IsOpen` property of RadDropDownButton.

## See Also

* [Events](https://www.telerik.com/winui/documentation/controls/radbuttons/events)
* [Customizing Appearance](https://www.telerik.com/winui/documentation/controls/radbuttons/apperance)
* [Button](https://www.telerik.com/winui/documentation/controls/radbuttons/button)
* [SplitButton](https://www.telerik.com/winui/documentation/controls/radbuttons/split-button)
* [ToggleButton](https://www.telerik.com/winui/documentation/controls/radbuttons/toggle-button)
* [RadioButton](https://www.telerik.com/winui/documentation/controls/radbuttons/radio-button)