Dim host As ElementHost
Public Sub New()
        InitializeComponent()
 
        Dim uc As wpf.Canvas = New wpf.Canvas
        host = New ElementHost()
        host.Dock = DockStyle.Fill
        host.Child = uc
        uc.Opacity = 0.015
        Me.PanelViewer.Controls.Add(host)
        host.BackColorTransparent = True
    End Sub

Danke für die Hilfe

Gruß Christian