Gets or sets optional user data to associate with the designer region.
Assembly: System.Design (in System.Design.dll)
Within a control designer implementation, use the property to store or retrieve additional information for the designer region.
For example, if the control designer implementation supports selecting from multiple designer regions, you can use the property in a control designer to store a unique index for each region. You can then use the property for the region that is passed into the OnClick method to store the index for the currently selected region.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
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.