protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
ErrorMessageResourceName = ErrorMessageResourceName.IsNotNullOrEmpty()
? ErrorMessageResourceName
: MinimumLength > 0
? "StringLengthAttribute_ValidationErrorIncludingMinimum"
: "StringLengthAttribute_ValidationError";
var dictionary = value as IDictionary;
if (dictionary == null)
{
return(ValidationResult.Success);
}
var invalidMembers = (from object key in dictionary.Keys
let item = dictionary[key]?.ToString()
where item?.Length > MaximumLength || item?.Length < MinimumLength
select $"{validationContext.MemberName}[{key}]").ToList();
return(invalidMembers.IsNotNullOrEmpty()
? new ValidationResult(
FormatErrorMessage(validationContext.DisplayName),
new[] { validationContext.MemberName })
: ValidationResult.Success);
}
