Columns object
The ExComboBox control supports more columns. The Columns object contains a collection of Column objects. Use the Columns property of the control to access the control columns. By default, the control doesn't add any new column to the collection, so before inserting any new items you have to be sure that you have already added at least one column.


  AddAdds a Column object to the collection and returns a reference to the newly created object. 
  ClearRemoves all objects in a collection. 
  CountReturns the number of objects in a collection. 
  ItemReturns a specific Column of the Columns collection. 
  ItemBySortPositionReturns a Column object giving its sorting position. 
  RemoveRemoves a specific member from the Columns collection.