> For the complete documentation index, see [llms.txt](https://avaloniachina.gitbook.io/avalonia/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://avaloniachina.gitbook.io/avalonia/docs/controls/autocompletebox.md).

# AutoCompleteBox

Represents a control that provides a text box for user input and a drop-down that contains possible matches based on the input in the text box.

### Reference

[AutoCompleteBox](http://reference.avaloniaui.net/api/Avalonia.Controls/AutoCompleteBox/)

### Source Code

[AutoCompleteBox.cs](https://github.com/AvaloniaUI/Avalonia/blob/master/src/Avalonia.Controls/AutoCompleteBox/AutoCompleteBox.cs)