The IBreadcrumExtender interface allows you to add additional nodes at the end of the current sitemap path through the widgets on the page. The scenario that it is implemented for is to display the Title of the content item that is loaded in DetailsMode in the ContentView widget, as a part of the breadcrumb. You can use it in any custom control, in order to add additional nodes to the current sitemap path. When used in custom widgets, the widget must register an object of type IBreadcrumbExtender in the current page using RegisterBreadcrumbExtender extension method declared in the Telerik.Sitefinity.Web namespace.
NOTE: To see the virtual nodes in the breadcrumb widget, you must set its AllowVirtualNodes property to true. For more information about the Breadcrumb widget, read Breadcrumb widget.
To extend your custom control with this functionality, you must perform the following:
Use the following code sample of IBreadcrumExtender implementation:
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