# WinForms DropDownList Overview **RadDropDownList** is an enhanced alternative to the standard Windows Forms combo box control. **RadDropDownList** can be [bound to data](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/populating-with-data/data-binding) sources. It allows you to [replace](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/custom-items) its major components giving you control over its visual and data behavior. You can exercise control over the [scrolling logic](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/features/scrolling), the items layout and even the low level data binding logic by providing their own data layer. You can review below the [Key Features](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/overview#key-features) that **RadDropDownList** supports. ![WinForms RadDropDownList Overview](https://www.telerik.com/products/winforms/documentation/assets/4f0a927a6ca91e7e9cc6c9dacc412921/dropdown-and-listcontrol-dropdownlist-overview001.png) ## Key Features * **Auto-complete**: The control provides flexible [auto-completion](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/features/auto-complete) options that suggest and append text from choices in the list as the user types. * **Filtering**: RadDropDownList supports [filtering](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/features/filtering) of its items. In order to apply a filter, you should set the **Filter** property of **RadDropDownList** to a predicate that will be called for every data item in order to determine if the item will be visible. * **Scrolling**: In the scenario where you cannot fit the **RadListDataItems** in the popup, a vertical scroll bar will appear so that you can scroll down and select the desired item. You can see the different scrolling options [here.](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/features/scrolling) * **Selection**: RadDropDownList supports three types of selection modes which you can explore in this [article.](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/features/selection) * **Sorting**: You can control how the items in the **RadDropDownList** are sorted by specifying the [SortStyle](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/features/sorting) property. > tip In the related [Getting Started](https://docs.telerik.com/devtools/winforms/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/getting-started) article you can find how to use the control with a sample scenario. > Download and check out the online demo at [demos.telerik.com](https://telerik-winforms-demos.s3.amazonaws.com/TelerikWinFormsExamplesLauncher.exe) ## Telerik UI for WinForms Learning Resources * [Telerik UI for WinForms DropDownList Homepage](https://www.telerik.com/products/winforms/dropdown-and-list.aspx) * [Get Started with the Telerik UI for WinForms DropDownList](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/getting-started) * [Telerik UI for WinForms API Reference](https://docs.telerik.com/devtools/winforms/api/) * [Getting Started with Telerik UI for WinForms Components](https://www.telerik.com/products/winforms/documentation/getting-started/first-steps) * [Telerik UI for WinForms Virtual Classroom (Training Courses for Registered Users)](https://learn.telerik.com/learn/course/external/view/elearning/17/TelerikUIforWinForms) * [Telerik UI for WinForms Forum](https://www.telerik.com/forums/winforms) * [Telerik UI for WinForms Knowledge Base](https://docs.telerik.com/devtools/winforms/knowledge-base) ## Telerik UI for WinForms Additional Resources * [Telerik UI for WinForms Product Overview](https://www.telerik.com/products/winforms.aspx) * [Telerik UI for WinForms Blog](https://www.telerik.com/blogs/desktop-winforms) * [Telerik UI for WinForms Videos](https://www.telerik.com/videos/product/winforms) * [Telerik UI for WinForms Roadmap](https://www.telerik.com/support/whats-new/winforms/roadmap) * [Telerik UI for WinForms Pricing](https://www.telerik.com/purchase/individual/winforms.aspx) * [Telerik UI for WinForms Code Library](https://www.telerik.com/support/code-library/winforms) * [Telerik UI for WinForms Support](https://www.telerik.com/support/winforms) * [What’s New in Telerik UI for WinForms](https://www.telerik.com/support/whats-new/winforms) ## See Also * [Getting Started](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/getting-started) * [Structure](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/structure) * [Design Time](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/design-time) * [Properties, Methods and Events](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/properties-methods-events) * [Drop Down Style](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/dropdownstyle) * [Drop Down Resizing](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/dropdown-resizing) * [Item Sizing](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/item-sizing) * [Animation Effects](https://www.telerik.com/products/winforms/documentation/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/animation-effects)