Filter subform based on what is typed in a textbox on the subform

Question

I'm trying to filter the records shown on a subform based on what is typed in a textbox on the subform. The subform is called Users, and it is on the Group form. On the Users subform there is a textbox called txtFilter. If I type "W" in txtFilter, I want to show only records in which the User's lastName or userName begins with a "W". As I continue typing W...A...L I want only Users whose lastName or UserName begin with "Wal" to show up.

I have some vague idea that I have to use either the recordset property or the subform's serverFilter to do this, but I'm really at a loss as to what to do. Please help me!

Answer 1

Private Sub txtFilter_Change()

    If Nz(Me.txtFilter.Text, "") = "" Then
        Me.FilterOn = False
        Me.txtFilter.SetFocus
        Exit Sub
    End If
    Me.Filter = "lastName like '" + Me.txtFilter.Text + "%' or userName like '" & _
        Me.txtFilter.Text + "%'"
    Me.FilterOn = True
    Me.txtFilter.SetFocus
    Me.txtFilter.SelStart = Len(Nz(Me.txtFilter.Text, "")) + 1


End Sub