This method is a necessary override (always override GetHashCode() anytime you override Equals()) and useful to support a System.Collection.Hashtable's use in DrillElement. The hash function selected should not produce collisions for data sources with fewer than 256 columns.
Target 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