'Declaration Public Overloads Function Add( _ ByVal columnSet As UltraTreeColumnSet _ ) As Integer
public int Add( UltraTreeColumnSet columnSet )
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