'Declaration Public Overloads Function Add( _ ByVal key As String, _ ByVal type As Type, _ ByVal isPersisted As Boolean, _ ByVal defaultValue As Object _ ) As TaskColumn
public TaskColumn Add( string key, Type type, bool isPersisted, object defaultValue )
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