The ConditionalProperty property can be set when the VerificationAttribute instance is created, but is optional. If you use a constructor that does not take a conditionalProperty parameter, the default value of an empty string ("") is used.
The ConditionalValue property is the right side, or value, of a conditional expression that is use in the verification of the accessibility checkpoint. The left side of the conditional expression is specified with the ConditionalProperty.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)