Use autocomplete functionality to allow users to display the most relevant results first as they begin typing into RadComboBox.
Use built-in support for validation to ensure user input is correct while helpful validation messages guide users toward the correct input.
Edit & selection modes
Use multiple edit and selection modes provided out of the box to enable users to find information via text search, drop-down, filtering, or custom lookup scenarios.
Add, remove, enable, and disable items at runtime for an advanced combo box that can better guide users to appropriate choices.