Question

我的这个模式是:

[Required(ErrorMessage = "Expiration Date is required")]
[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}", ApplyFormatInEditMode = true)]
[DisplayName("Expiration Date")]
public DateTime? ExpirationDate { get; set; }

我这样说就是要验证,以便用户能够进入今天之前的日期。如果我认可愤怒的话,我可以这样做。

[Range(1, int.MaxValue, ErrorMessage = "Value must be greater than 0")]

但范围属性并不支持日标。时间价值是否如此?

Answer 1

这将有助于你。

public class MyDateAttribute : ValidationAttribute
{
    public override bool IsValid(object value)// Return a boolean value: true == IsValid, false != IsValid
    {
        DateTime d = Convert.ToDateTime(value);
        return d >= DateTime.Now; //Dates Greater than or equal to today are valid (true)

    }
}

Now apply this attribute to your Model property.

    public class SomeModel
    {
       [Display(Name = "Date of birth")]
       [MyDate(ErrorMessage ="Invalid date")]
       public DateTime DateOfBirth { get; set; }
    }

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