ComboBox1.Items.AddRange(IO.File.ReadAllLines("C:\Verlauf.txt"))  'dein Pfad ( 
 ' laden)

Using sw As New IO.StreamWriter("C:\Verlauf.txt")                ' dein Pfad ( 
' speichern)
            For Each s As String In ComboBox1.Items
                sw.WriteLine(s)
            Next s
 End Using