Catch Enter Key with KeyDown Event in Text Column of DataGridVIew Conrol

[yekokoaung]

I want to catch Enter Key with KeyDown Event in TextColumn of DataGridView Control. When I press Enter in the txtItemCode column, I will check the ItemCode in the Database and other stuffs. I can get other keys but I can't get Enter. When I hit the Enter key, The focus is go to next row same column. How could I catch the Enter Key. I can catch with PreviewKeyDown Event but The Event occur from other columns also. I just want to catch from single column. I already googled but found nothing. Below is my code. Help me please.

Private Sub g_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles g.EditingControlShowing
    Select Case g.CurrentCell.ColumnIndex
        Case 0
            Dim t As TextBox
            t = e.Control
            t.AcceptsReturn = False

            RemoveHandler t.KeyDown, AddressOf txt_KeyDown
            AddHandler t.KeyDown, AddressOf txt_KeyDown
    End Select
End Sub

Private Sub txt_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs)
    If e.KeyCode = Keys.Return Then
        Dim t As TextBox = CType(sender, TextBox)
        dtb = rst("select * from customer where customerno=" & Val(t.Text))
        If Not dtb.Rows.Count = 0 Then
            g.Rows(g.CurrentRow.Index).Cells(1).Value = dtb.Rows(0)("customername").ToString()
        End If
    End If
End Sub