How to open the BackStage on form load in WinForms RibbonControlAdv?

public partial class Form1: Form
{
    public Form1()
    {
       InitializeComponent();
       this.Load += Form1_Load;
    }
    // To show the backstage in the ribbon control.
    private void Form1_Load(object sender, EventArgs e)
    {
       this.BackStageView1.ShowBackStage();
    }
}

Public Class Form1
    Inherits RibbonForm
    Public Sub New()
       InitializeComponent()
       AddHandler Me.Load, AddressOf Form1_Load
    End Sub
    Private Sub Form1_Load(sender As Object, e As EventArgs)
       Me.BackStageView1.ShowBackStage()
    End Sub
End Class