Gets a value indicating whether the control designer requires a temporary preview control at design time.
Assembly: System.Design (in System.Design.dll)
Typically, you specify a value for the property by applying the SupportsPreviewControlAttribute attribute to a custom designer class declaration. The value of the property for the SupportsPreviewControlAttribute attribute determines the behavior for the UsePreviewControl and ViewControl members in the base ControlDesigner class.
Set the property to true to indicate that the designer uses a temporary copy of the associated control to generate the design-time HTML. Changes to the temporary control are not persisted.
- 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.