Validator.TryValidateObject未验证RangeAttribute

Question

鉴于以下对象,

public class Question
{
    [Required]
    public string QuestionText { get; set; }

    [Range(1, 5)]
    public int Difficulty { get; set; }        
}

使用以下验证码

ICollection<ValidationResult> results = new List<ValidationResult>();
Question question = new Question();
ValidationContext ctx = new ValidationContext(question, null, null);
Validator.TryValidateObject(question, ctx, results);
// results.Length = 1

为什么Range属性在Required(值显然为0)时不会创建验证错误？

Answer 1

啊所以看起来我需要指定validateAllProperties = true

Validator.TryValidateObject(question, ctx, results, true);

顺便说一句,让我失望的是我有一个抽象基类,其中包含另一个属性而没有validateAllProperties,Validator也会停止在所有超类的第一个错误上.所以你会得到每个超类的验证错误(在我的情况下是2)

Answer 2

Validator.TryValidatorObject(instance, validationContext, validationResults)呼吁Validator.TryValidateObject(instance, validationContext, validationResults, validateAllProperties)有validateAllProperties = false.

当validateAllProperties是false,只有RequiredAttribute将被验证.