'Declaration Protected Overrides Sub ValidateDataForChart()
protected override void ValidateDataForChart()
Implementers should override this method (being sure to call the base class implementation, if any) and add additional validity constraints when the base class implementation indicates the data may be valid.
Heat Map chart types require at least 2 rows and 2 columns, since this is the minimum amount of data necessary to plot a four-corner surface (with each corner affixed to the X- and/or Z- axes).
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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