How to show message of nodata on highcharts c# .net

Question

I'm using Highcharts under c# .net I want to show a message "No data to display" if the series are empty and there no graphe or data to display.

I added the code bellow but it is not shown:

            Lang = new Lang
            {
               NoData = "Aucune donnée à afficher",
            },
            NoData = new NoData
            {
                Style = new NoDataStyle
                {
                    FontWeight = "bold",
                    FontSize = "15px",
                    Color = "#303030",                       
                },                  
            }

Can someone help me please ?