When overridden in a derived class, gets a value indicating whether the specified property is expandable to show nested properties.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
If a property is expandable, a plus (+) sign is displayed by the property name in the PropertyGrid. If the plus sign is clicked and no nested properties are available, the plus sign is then removed.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.