ChartSeriesCollection Add method. Adds new ChartSeries to this collection. Use this method to add series to any type of Bar Column Line and Surface charts in C#....5 , 22.9 , 28.7 , 33.1 }); Assert . AreEqual...dates , new [] { 15.8 , 21.5 , 22.9 , 28.7 , 33.1 }); Assert . AreEqual...