Dynamic Combobox editor is a combination of a single-line editable textbox and a drop-down list filtered according to values entered in a textbox. It is recommended to use this editor for lookup columns when the lookup datasource has a large amount of records (for lookup datasources with a few records you can also use Combobox or Radio Group editors).

Key properties:

Minimum input length
  Specifies number of characters necessary to start the search.
Item caption template
  Allows to populate the editor with values of multiple columns from a lookup data source.
Formatting functions
  Allows to render the current selection and search results.

Open Insert or Edit forms to see the editor in action.