◆ IsValid() [2/2]

override? ValidationResult System.ComponentModel.DataAnnotations.CustomValidationAttribute.IsValid	(	object?	value,
		ValidationContext	validationContext )

inlineprotectedvirtual

Reimplemented from System.ComponentModel.DataAnnotations.ValidationAttribute.

Definition at line 57 of file CustomValidationAttribute.cs.

    {
        ThrowIfAttributeNotWellFormed();
        MethodInfo methodInfo = _methodInfo;
        if (!TryConvertValue(value, out var convertedValue))
        {
            return new ValidationResult(System.SR.Format(System.SR.CustomValidationAttribute_Type_Conversion_Failed, (value != null) ? value.GetType().ToString() : "null", _firstParameterType, ValidatorType, Method));
        }
        try
        {
            object[] parameters = ((!_isSingleArgumentMethod) ? new object[2] { convertedValue, validationContext } : new object[1] { convertedValue });
            ValidationResult validationResult = (ValidationResult)methodInfo.Invoke(null, parameters);
            _lastMessage = null;
            if (validationResult != null)
            {
                _lastMessage = validationResult.ErrorMessage;
            }
            return validationResult;
        }
        catch (TargetInvocationException ex)
        {
            throw ex.InnerException;
        }
    }