public class DropDownButton : ButtonBase

Public Class DropDownButton
	Inherits ButtonBase

public ref class DropDownButton : public ButtonBase

type DropDownButton =  
    class
        inherit ButtonBase
    end

// Create a drop down button.
var dropDown = new DropDownButton
{
  HorizontalAlignment = HorizontalAlignment.Stretch,
  Margin = new Vector4F(4),
  MaxDropDownHeight = 250,
};

// Add a few random items.
for (int i = 0; i < 20; i++)
  dropDown.Items.Add("Item " + i);

// Select the first item in the list.
dropDown.SelectedIndex = 0;

// To show the drop down button, add it to an existing content control or panel.
panel.Children.Add(dropDown);

GameProperty<int> selectedIndexProperty = dropDown.Properties.Get<int>("SelectedIndex");
selectedIndexProperty.Changed += OnSelectionChanged;