Public Class Form1
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles MyBase.Load
        With TreeView1.Nodes
            With .Add("TR_CS")
                .Nodes.Add("Project Manager 'TR': Max Mustermann")
                .Nodes.Add("Admin 2")
                .Nodes.Add("Admin 3")
 
            End With
 
            With .Add("G1_CS")
                .Nodes.Add("Project Manager 'HQ': Max Mustermann")
                .Nodes.Add("Benutzer 2")
                .Nodes.Add("Benutzer 3")
            End With
 
        End With
 
    End Sub
End Class