Can a user enter custom values in a combo box?
The ComboBox supports the implementation of custom values. By default, the ComboBox dismisses values that do not appear in the supplied list of items when the user presses Enter or when the component loses focus. To configure the ComboBox to accept custom values, set the allowCustom property to true .
Which method is used to add items in ComboBox?
To add a set of items to the combo box it is best to use the AddRange method. If you choose to use the Add method to add a number of items to the combo box, use the BeginUpdate method to suspend repainting during your add and the EndUpdate method to resume repainting.