CustomValidationAttribute specifed method not being called

Question

I\'m using the System.ComponentModel.DataAnnotations.CustomValidationAttribute to validate one of my POCO classes and when I try to unit test it, it\'s not even calling the

Answer 1

Try using the overload that takes a bool that specifies if all properties should be validated. Pass true for the last parameter.

public static bool TryValidateObject(
    Object instance,
    ValidationContext validationContext,
    ICollection<ValidationResult> validationResults,
    bool validateAllProperties
)

If you pass false or omit the validateAllProperties, only the RequiredAttribute will be checked. Here is the MSDN documentation.