How to: Remove Items from Windows Forms DomainUpDown Controls
.NET Framework 3.0
You can remove items from the Windows Formscontrol by calling the or method of the class. The Remove method removes a specific item, while the RemoveAt method removes an item by its position.
To remove an item
Use the Remove method of the DomainUpDownItemCollection class to remove an item by name.
Use the RemoveAt method to remove an item by its position.