The DevExpress ASP.NET Autocomplete Combo Box (ASPxComboBox) and List Box (ASPxListBox) editors allow list data to be displayed in several columns. Multi-column mode is only in effect for editors that obtain items from a data source. An editor's column collection can be defined and customized through the Columns property. Each column within this collection should be bound to a data source field via the FieldName property. You can also define a column's header caption, width, visibility state and other settings via its properties.
For the ASPxComboBox control, all advanced features such as incremental filtering and loading items on demand via callbacks are supported in multi-column mode. The selected item is displayed within the edit box of the ASPxComboBox editor using a value whose format is based on the TextFormatString property setting.