# ToolbarButtonBaseItem class

Provides the base functionality for toolbar buttons that can display a popup.

**Namespace:** [`Eremex.AvaloniaUI.Controls.Bars`](./index.md)  
**Assembly:** `Eremex.Avalonia.Controls.dll`  
**NuGet Package:** [Eremex.Avalonia.Controls](https://www.nuget.org/packages/Eremex.Avalonia.Controls)

## Declaration

```csharp
public class ToolbarButtonBaseItem : ToolbarItem, IPopupOwner
```

## Public Members

| name | description |
| --- | --- |
| [ToolbarButtonBaseItem](ToolbarButtonBaseItem/ToolbarButtonBaseItem.md)() | The default constructor. |
| [DropDownArrowAlignment](ToolbarButtonBaseItem/DropDownArrowAlignment.md) { get; set; } | Gets or sets the position of the drop-down arrow within the item. |
| [CloseDropDown](ToolbarButtonBaseItem/CloseDropDown.md)() | Closes the item's drop-down popup. |
| [OpenDropDown](ToolbarButtonBaseItem/OpenDropDown.md)() | Opens the item's drop-down popup. |

## See Also

* class [ToolbarItem](./ToolbarItem.md)
* interface [IPopupOwner](./IPopupOwner.md)
* namespace [Eremex.AvaloniaUI.Controls.Bars](./index.md)

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