When implemented, gets a collection of information that can be accessed by a control designer.
ReadOnly Property UserData As IDictionary
A control's properties and content can be persisted, so that the control maintains state in the design-time environment. This property is used only by control designers.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.