Returns a ChartLine object representing the drop lines of a line, area, or scatter series.

 public ChartLine DropLine{ get; }
Public ReadOnly Property DropLine() As ChartLine

Drop lines connect data points with the category axis. By default, drop lines are colored black, have a Narrow weight and a Solid style. Note that scatter charts do not support drop lines, so while you can set the drop lines properties, they will not appear in the output of a scatter series.