I've got a ComboBox in ComboBoxStyle.DropDownList
This gets dunamically created based on the number of a passed parameter. The letters is an ArrayList of letters which are added to the dropdown
for (int a = i; a < drivesLetters.Count; a++)
I've been trying to create a method so that when I click on a dropdown list, the letters which are already selected should not show up from the selections. Like on the image above, If I click on M, then M should not show up. If I select V, then V should be selected, not show on the list, M should be added.
I'm not sure how to actually do this. I wonder if I should have two ArrayLists (one holds the letters used in the dropdown, and another one to hold all the unused letters).
Please kindly point me to a good starting point. I've tried so many methods, but no success..