Keypress doesn't work with autocompletemode suggest

[wpm]

I have a combobox with the following properties set in Visual Basic
2005
AutoCompletMode : Suggest
AutoCompletSource : Listitems
DropDownStyle : DropDown

I need to use a keypress event for the backspace and enter key because
I want to save text that I entered in the combobox to a file.
With the AutoCompletMode : Suggest the event doesn't work. With the
AutoCompletMode : None the event fires.
See below the code I use:

Private Sub Combo1_KeyPress(ByVal Sender As Object, ByVal e As
System.Windows.Forms.KeyPressEventArgs) Handles Combo1.KeyPress
Dim msg As String
Dim title As String
Dim style As MsgBoxStyle
Dim response As MsgBoxResult
If e.KeyChar = Chr(8) Or e.KeyChar = Chr(13) And Len(Combo1.Text) <0
Then
If e.KeyChar = Chr(13) Then
e.Handled = True
msg = "Add to database?"
style = MsgBoxStyle.Question Or MsgBoxStyle.YesNo
title = "Database"
response = MsgBox(msg, style, title)
If response = MsgBoxResult.Yes Then
Combo1.Items.Add(Combo1.Text)
Combo2File(My.Application.Info.DirectoryPath &
"\Proces.txt", Combo1)
End If
End If
End If
End Sub