UltraDropDown

private void FruitInit()
     {
    //Create some fruit        
    fruits.Add(-1,"apple");
            fruits.Add(-2,"banana");

            //Create and add to the ultraDropDown
            UltraDropDown fruitUltraDropDown = new UltraDropDown();
            fruitUltraDropDown.DataSource = fruits.ToList();
            fruitUltraDropDown.DisplayMember = "Value";
            fruitUltraDropDown.ValueMember = "Key";
            MyUltraGrid.DisplayLayout.Bands[0].Columns["MyColumn"].ValueList = fruitUltraDropDown;
        }