Reference the template of the multi-view widget designer
To wire up the template with the view, you must return its name via the LayoutTemplatePath property. It specifies the path to the embedded resource following the naming convention <Namespace>.<ResourceFolderPath>.<TemplateName>, where you must replace path slashes inside the ResourceFolderPath with dots.
For example, if you have project called MultiViewWidget and the path to the template file is Resources/Views/MultiViewWidgetDesignerView.ascx, the LayoutTemplatePath property must be set as follows: MultiViewWidget.Resoureses.Views.MultiViewWidgetDesignerView.ascx
.
EXAMPLE: For more information about referencing the template of the designer in the designer's class, using the LayoutTemplatePath
property, see For developers: Full code of the widget designer view class.