[XtraSerializableProperty(XtraSerializationVisibility.Content)]
public IFlyoutProperties FlyoutProperties { get; }

<XtraSerializableProperty(XtraSerializationVisibility.Content)>
Public ReadOnly Property FlyoutProperties As IFlyoutProperties

Flyout message;

public Form1()
{
    InitializeComponent();

    // Customize global flyout appearance for all flyouts in the WindowsUIView.
    windowsUIView1.FlyoutProperties.AppearanceCaption.ForeColor = Color.Red;
    windowsUIView1.FlyoutProperties.Appearance.BackColor = Color.Green;

    // Create a new Flyout instance.
    message = new Flyout();

    // Define a FlyoutAction that contains a caption, description, and buttons.
    FlyoutAction closeAction = new FlyoutAction()
    {
        Caption = "Close",
        Description = "Do you want to close the dialog?"
    };

    // Add predefined commands (OK and Cancel) to the flyout.
    closeAction.Commands.Add(FlyoutCommand.OK);
    closeAction.Commands.Add(FlyoutCommand.Cancel);

    // Assign the action to the flyout.
    message.Action = closeAction;

    // Customize flyout appearance and behavior for this specific instance.
    message.Properties.Style = FlyoutStyle.MessageBox; // Display the flyout as a message box.
    message.Properties.Appearance.BackColor = Color.Blue; // Override the global background color.
    message.Properties.AppearanceCaption.ForeColor = Color.White; // Override the global caption color.
    message.Properties.AppearanceCaption.Font = new Font("Tahoma", 14, FontStyle.Bold); // Customize caption font.

    // Register the flyout in the WindowsUIView.
    windowsUIView1.ContentContainers.Add(message);
}