Telerik UI for ASP.NET Core DropDownTree Overview

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The DropDownTree component is part of Telerik UI for ASP.NET Core, a professional grade UI library with 110+ components for building modern and feature-rich applications. To try it out sign up for a free 30-day trial.


The Telerik UI for ASP.NET Core DropDownTree combines the functionality of a DropDownList and a TreeView component. It is an editor of hierarchical data in a tree-like structure with an option to select one or more items, filter items, and customize its nodes.

The DropDownTree offers built-in checkbox support, keyboard navigation, and RTL support, and provides templates for complete customization of each node. You can bind the component to various data sources and take advantage of its load on demand feature to request data only when a parent node is expanded.

The current demo shows an example of a DropDownTree whose items are defined within the helper declaration.

The ASP.NET Core DropDownTree control is part of Telerik UI for ASP.NET Core, a professional-grade UI library with 110+ components for building modern and feature-rich web applications. The UI for ASP.NET Core DropDownTree is a server-side wrapper for the Kendo UI for jQuery DropDownTree component and supports an HtmlHelper and a TagHelper mode.

Functionality and Features

  • Data binding—The DropDownTree allows you to declaratively define its items or bind its DataSource either to a local data collection or to remote data.
  • Appearance—You can control the size, radius, and fill mode of the component.
  • Checkboxes—The DropDownTree supports multiple item selections with checkboxes.
  • Filtering—You can filter the displayed DropDownTree items by their text value.
  • Items—You can also pass specific properties to the DropDownTree items, such as image, icon, state, and more.
  • Templates—The DropDownTree templates allow you to customize the rendering of its items, selected values, and a pop-up header or footer.
  • Accessibility—The DropDownTree is accessible for screen readers, supports WAI-ARIA attributes, and delivers keyboard shortcuts for faster navigation.

Additional Apps

This DropDownTree example is part of unique collection of hundreds of ASP.NET Core demos, with which you can see all Telerik ASP.NET Core components and their features in action. View the source code of the demos from the library or directly adapt, and edit them and their theme appearance in Telerik REPL for ASP.NET Core or ThemeBuilder.

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