Question

I am trying to come up with a validation for a nullable property, like int.

Example

[RangeValidator(0, RangeBoundaryType.Inclusive, 1, RangeBoundaryType.Inclusive)] int? Age { get; set; } 

However if I set Age to null validation fails because it doesn’t fall in the range, I know I need an [ValidatorComposition(CompositionType.Or)] as well, but what else should I use?

Answer 1

You could add the IgnoreNulls attribute:

[IgnoreNulls()] [RangeValidator(0, RangeBoundaryType.Inclusive, 1, RangeBoundaryType.Inclusive)] int? Age { get; set; }