MS Chart with DataBinding refresh

Question

Hallo! 

I need a real-time reflection of changing in the database. Below is my code example.

It is not working properly. What's the matter?

     Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles                    Timer1.Tick
        SVal = SVal + 1
        EVal = EVal + 1
        RVal = Rnd()
        NVal = 10 * RVal
        Me.NTableAdapter1.Insert(SVal, 0, EVal, NVal) 'database update 
        If NVal = 10 Then
            Timer1.Enabled = False
            Me.Chart1.DataBind()    'refresh Chart1?
        Else
            If TmrVal = 10 Then
                TmrVal = 0
                Me.Chart1.DataBind()    'refresh Chart1?
            End If
        End If
    End Sub