Question

How to clear all the options in a select box in C# (Windows form application)?
Is there something easy or does the code need to loop over all the items?

How to dynamically add an option to this select box?

Answer 1

call the Clear() method on the Items Property

listControl.Items.Clear();

This will work for a ListBox or a ComboBox

http://msdn.microsoft.com/en-us/library/system.windows.forms.listcontrol.aspx