Question

I m trying to add Data Validation To my DateTime Attribut i want to oblige user to select Date between DateTime.Now and smaller then one years after DateTime.now.addyears(+1) This is my code :

 public class DateDebut : ValidationAttribute
        {
            public override bool IsValid(object value)
            {
                if (value == null) return false;
                DateTime enteredDate = (DateTime)value;

                if ( (enteredDate >= DateTime.Now) && (enteredDate <= DateTime.Now.AddYears(+1)))
                    return true;
                else
                    return false;
            }
        }
        [Required]
        [Display(Name = "De : ")]
        [DataType(DataType.Date)]
        [DateDebut(ErrorMessage="Date invalide")]
        public DateTime dd { get; set; }

此自定义验证 dosn t 工作, 验证未执行, 即认为我错过了一些真实的简单吗?

Answer 1

我完全同意丹尼尔的话

然而我发现当我需要比较我的模型中的属性时我用的是甲状腺Object

http://msdn.microsoft.com/en-us/library/system.sucidemodel.dataannotocations.ivalidatabableobject.aspx

I find it faster and easier for most small types of comparisons you would have some that looks like this

public class myModel : IvalidatableObject
{
 string debut = DateTime.Now.ToShortDateString();
 string fin = DateTime.Now.AddYears(+1).ToShortDateString(); 
 [Required]
 [Display(Name = "De : ")]
 [DataType(DataType.Date)]
 public DateTime dd { get; set; }

  public IEnumerable<ValidationResult> Validate()
  {
    if(this.debut > this.fin)
    {
      yield return new ValidationResult("debut cannot be greated then fin");
    }
  }
}

读起来,看看什么对你最好

Answer 2

属性在性质上是静态的。您是否考虑为验证写入自己的属性? 网络上有几个例子应该启动您。

您也可以从 RangeAttrimitte 继承并按需要注入。

友情链接