In code, Is there a way to hide only some labels in label collection ?

For example  I'd like to hide Point2 label :

        Dim dataPoint1 As New DataPoint With {.Value = 10, .Label = "06:00"}
        series1.DataPoints.Add(dataPoint1)
        Dim dataPoint2 As New DataPoint With {.Value = 7, .Label = ""}
        series1.DataPoints.Add(dataPoint2)
        Dim dataPoint3 As New DataPoint With {.Value = 11, .Label = "08:00"}
        series1.DataPoints.Add(dataPoint3)

Result = for dataPoint2, in XamWebgrid,   label shown = "2"