Public Class Form1
Public Sub Form1_Load(ByVal sender As System.Object, ByVal e As _
  System.EventArgs) 
_Handles MyBase.Load
 
        load1()             'funktioniert
        Module1.add()       'funktioniert nicht bei reload des Formulars
 
End Sub
Public Sub Button1_Click(ByVal sender As System.Object, ByVal e As _
  System.EventArgs) Handles _Button1.Click
 
        Dim oform2 As New Form2
        oform2.Show()
        Me.Close()
 
End Sub
 
Private Sub load1()
 
        Label1.Text = "Hallo Label"
        ListBox1.Items.Add("Hallo Listbox")
 
End Sub
 
End Class

Public Class Form2
    Dim oform1 As New Form1
    Public Sub Button1_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles Button1.Click
        oform1.Show()
        Me.Close()
    End Sub
End Class

Module Module1
    Public Sub add()
        Form1.ListBox1.Items.Add("Geht doch")
    End Sub
End Module