.NET Framework 4.6 and 4.5
The IControlDesignerAccessor type exposes the following members.
|GetDesignModeState||When implemented, gets the state from the control during use on the design surface.|
|SetDesignModeState||When implemented, sets control state before rendering it on the design surface.|
|SetOwnerControl||When implemented, specifies the control that acts as the owner to the control implementing this method.|