If Buttons.ListOfValues is set, then that property has no effect.
That value is also used when increment/decrement happens on the up/down arrow keys.
If value is set to 0, then the value of 1 is used to increment/decrement a field where caret is located.
Default value is set to 1. For editor with date-format 1 day is used and for edtor with time-format: 1 minute.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2