| Overload | Description |
|---|---|
| Add(Holiday) | Adds an holiday to the selected holidays collection. |
| Add(Holiday[]) | Adds an array of holidays to the selected holidays collection. |
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