Hi Manal,
You can do this by hit testing the chart and if the mouse if currently over a line series show the individual data label for the current point. We think however that the approach with a point series that overlays a line and a tooltip tool is a better approach...

Best Regards,
Nevron Support Team

Hi I have a chart showing multiple NLineSeries is there a way for these series to show data labels only when mouse pointer is over the data point.

Thanks and regards.
Manal