'Declaration Public ReadOnly Property ActiveSelectionCellRangeFormat As SpreadsheetCellRangeFormat
public SpreadsheetCellRangeFormat ActiveSelectionCellRangeFormat {get;}
Any changes made to this object will affect all the objects in the selection. So for example, the Font.Name may return "Arial" because the active cell has that as its resolved font name even though the other cells are using a different font but if you set the Font.Name of this object to "Arial" then all the objects affected by the selection will have their Font.Name updated to that value.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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