RadAutoCompleteTextView has three different modes for providing suggestions, namely:
The suggest mode can be changed with the
SuggestionMode property of the AutoCompleteTextView. The default value is
this.autocomplete.SuggestMode = SuggestMode.Suggest;
SuggestMode.Suggest the autocomplete represents the filtered suggestions, matching the typed text, in a pop-up view, which contains list of the suggestions.
SuggestMode.Append mode the autocomplete shows only the first suggestion matching the typed text, which is represented as direct suffix of the typed text.
SuggestMode.SuggestAppend mode the autocomplete combines both upper-mentioned modes. It shows all matching suggestions in a pop-up view and the first of them is appended to the typed text.