title: how to add multiple items in single invoice in access 2013
body: <p>I have used following code from stack over flow</p>
  
  <pre><code>combobox AfterUpdate 
  Private Sub InvoiceCombo_AfterUpdate()
  If IsNull(Me.InvoiceCombo) Then
  Me.Product=Null
  Me.qty=Null
  Me.Rate=Null
  Else
  Me.Product=me.InvoiceCombo.Column(1)
  Me.Qty=me.InvoiceCombo.Column(2)
  Me.Rate=me.InvoceCombo.Column(3)
  End If
  End Sub
  </code></pre>
  
  <p>this is working fine but the problem is cannot add multiple rows(multiple products, like multiple items in one invoice)</p>