Bootstrap Controls for ASP.NET Core are in maintenance mode. We don’t add new controls or develop new functionality for this product line. Our recommendation is to use the ASP.NET Core Controls suite.
The Bootstrap Toolbar control provides visual interface for creating simple hierarchical toolbars on pages of your web applications. The toolbar control displays a set of buttons arranged in groups.
A root-level menu item that has child items is rendered as a drop-down button displaying a hierarchical popup menu when clicked.