Gets the ActivityDesignerTheme associated with the designer.
Assembly: System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)
If a designer has an ActivityDesignerTheme associated with it, the designer will use the look and feel properties described by the ActivityDesignerTheme to paint itself. If no ActivityDesignerTheme is associated with the designer, the designer will use the AmbientTheme to repaint its look and feel properties.
Available since 3.0