how to pop a message for a change in the database?

hi
so im using visual studio 2010, making a winform vb.net...
i have a bindingNavigator, im connecting and using database here but, i connect using visual studio tools, im not fully typing the whole thing, so, basically i used a binding navigator, and the thing is that when a certain calculation appears (through the use of timer or not) the record do get affected and i get the results i want and it will be stored,  only thing, is that when this change happens i pop a msgbox, problem is that change happens through all the records i need, but pops a msgbox only for the record that the bindingNavigator is currently on! i was thinking to loop through the datatables or something but dont know how about..

sample:
Private Sub picturebox_VisibleChanged(sender As System.Object, e As System.EventArgs) Handles picturebox.VisibleChanged

        If picturebox.Visible = True Then
            If MessageBox.Show("FIRE SAFETY, DATE NEAR, SO, A MONTH EXTENSION?", "ALMOST DUE" & vbNewLine, MessageBoxButtons.YesNo) = DialogResult.Yes Then
                FIRESAFETYTESTDateTimePicker.Value = FIRESAFETYTESTDateTimePicker.Value.AddDays(31.0)
               
            Else
                Exit Sub
            End If
        End If
    End Sub

this will take place if i navigate to (it)....through binding navigator....
any tips please?
thanks