Question

即时使用万无一失的验证

[Required]
[Range(typeof(TimeSpan), "00:00:00", "23:59:59")]
public Nullable<System.TimeSpan> start { get; set; }
[Required]
[GreaterThan("HoraInicio")]
public Nullable<System.TimeSpan> end { get; set; }

它可以正确验证字段但是当我在控制器中调用submitchanges时会抛出错误

[NotImplementedException：No se puede implementarelmétodopolaoperación。]      Foolproof.ModelAwareValidationAttribute.IsValid（对象值）+59      System.ComponentModel.DataAnnotations.ValidationAttribute.IsValid（Object value，ValidationContext validationContext）+115      System.ComponentModel.DataAnnotations.ValidationAttribute.GetValidationResult（Object value，ValidationContext validationContext）+29      System.Data.Entity.Internal.Validation.ValidationAttributeValidator.Validate（EntityValidationContext entityValidationContext，InternalMemberEntry property）+198

[DbUnexpectedValidationException：在调用Foolproof.GreaterThanAttribute.IsValid时，在'end'验证期间抛出了意外异常。有关详细信息，请参阅内部异常。]

与日期相同，我该怎么办？还有其他方法可以进行此验证吗？

Answer 1

似乎万无一失并没有与EF4或更高版本集成，以解决您必须下载整个Foolproof项目并过度驱动ModelAwareValidationAttribute类中的“isvalid”方法，他们构建它并将dll引用到您的项目中。

protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
var container = validationContext.ObjectInstance;

#region This block of code decompiled from namespace System.ComponentModel.DataAnnotations.ValidationAttribute
ValidationResult local_0 = ValidationResult.Success;
if (!this.IsValid(value, container)) // Change to decompiled code here to call our abstract implementation instead of the NotImplemented IsValid(object value) method above
{
    string[] temp_26;
    if (validationContext.MemberName == null)
        temp_26 = (string[])null;
    else
        temp_26 = new string[1]
            {
                validationContext.MemberName
            };
    string[] local_1 = temp_26;
    local_0 = new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName), (IEnumerable<string>)local_1);
}
return local_0;
#endregion}

http://foolproof.codeplex.com/SourceControl/latest http://forums.asp.net/t/1752975.aspx?Conditional+validation+with+MVC+Foolproof+Validation+

万无一失的验证greaterthan错误System.NotImplementedException

1 个答案: