How to hide the floating toolbar in the WinForms RibbonControlAdv while switching to BackStage?

//The event is raised once backstage visibility is changed.
void BackStage_VisibleChanged(object sender, EventArgs e)
{
    if (!backStageView1.BackStage.Visible)
    {
        //Shows the toolbars.
        this.commandBar1.Visible = true;
        this.mainFrameBarManager1.BarVisible = true;
    }
    else if (backStageView1.BackStage.Visible == true)
    {
        //Hides the toolbars.
        this.commandBar1.Visible = false;
        this.mainFrameBarManager1.BarVisible = false;
    }
}

'The event is raised once backstage visibility is changed.
Private Sub BackStage_VisibleChanged(ByVal sender As Object, ByVal e As EventArgs)
    If Not backStageView1.BackStage.Visible Then
        'Shows the toolbars.
        Me.commandBar1.Visible = True
        Me.mainFrameBarManager1.BarVisible = True
    ElseIf backStageView1.BackStage.Visible = True Then
        'Hides the toolbars.
        Me.commandBar1.Visible = False
        Me.mainFrameBarManager1.BarVisible = False
    End If
End Sub