If the Sort method is optimized so that if it is called with the same SortOrder value as the last time the method was called, and the contents of the collection have not changed since that last call, no sorting takes place.
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