This property is present for inheritance by the BarChartAppearance class for use in Bar and Stacked Bar charts, it does not apply to 3-D chart types.
BarSpacing determines how much space is placed between bars. The value is specified in whole bar width increments. The space will always by a multiple of the width of a bar.
Series SpacingTarget Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2