I think it's a combo box you're after. You'd populate its items collection
with the remembered text strings.

Tom Dacon
Dacon Software Consulting

the following code worked for me. also you have to change the source
of textbox to custom source.
i am using a queue. there mite be a better way to limit a queue to 10.

   Dim someQ As New Queue(Of String)
   Dim c As New AutoCompleteStringCollection
   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles Button1.Click

       someQ.Enqueue(TextBox1.Text)
       Do While someQ.Count > 10
           someQ.Dequeue()
       Loop

       TextBox1.Clear()
       c.Clear()
       c.AddRange(someQ.ToArray())

   End Sub

   Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
       'TextBox1.AutoCompleteCustomSource = someQ

       TextBox1.AutoCompleteCustomSource = c

   End Sub