Hello, Ivan,
Thank you for writing.
RadDropDownList provides flexible auto-completion options that suggest and append text from choices in the list as the user types. The suggestions comes from the applied
DataSource collection Additional information about the supported functionality is available in the following help article:
https://docs.telerik.com/devtools/winforms/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/features/auto-complete
Note that
RadDropDownList hosts the standard MS
TextBox. Hence, you can use its autocomplete behavior in order to get a similar functionality. Here is a sample code snippet demonstrating how to enable it:
I hope this information helps. Should you have further questions I would be glad to help.
Regards,
Dess
Progress Telerik