System.Design 2.0.0.0 System.Object To be added. Contains the design-time markup for content and regions. Constructor 2.0.0.0 To be added. Initializes a new instance of the class by using the specified content and regions. HTML markup. A collection that contains the regions. Property 2.0.0.0 System.String To be added. To be added. Gets the design-time HTML markup. Property 2.0.0.0 System.Web.UI.Design.DesignerRegionCollection To be added. To be added. Gets a collection of objects at design time.