Hello dere..
which is preferrable to have for ultragrid column ?
1. whether to use ultraDropdown Control on Design, where we load data on Form Load?
or
2. Whether to use ultradropdown object in runtime.
There is no difference, other than your own personal preference..
UltraDropDown Object which we use at runtime seems Slower on cliking the Dropdown to display the list when compare to having dropdown control on Design.