// *******************************************************************
/// <summary>
/// This method validates the current object and throws an exception
/// with the contents of any failing validations.
/// </summary>
/// <exception cref="ArgumentException">This exception is thrown whenever
/// the argument is missing, or null.</exception>
/// <exception cref="ValidationException">This exception is thrown if
/// any of the validation checks fail.</exception>
public static void ThrowIfInvalid(
this IValidatableObject validatableObject
)
{
// Validate the parameters before attempting to use them.
Guard.Instance().ThrowIfNull(validatableObject, nameof(validatableObject));
// Validate ourselves.
var results = validatableObject.Validate(
new ValidationContext(validatableObject)
);
// Did anything fail?
if (results.Any())
{
// Format the invalid member names.
var memberNames = string.Join(
",",
results.Select(x => string.Join(",", x.MemberNames))
);
// Format the error message.
var errorMessages = string.Join(
",",
results.Select(x => x.ErrorMessage)
);
// Throw the exception.
throw new ValidationException(
message: string.Format(
Resources.VerifiableObject_Invalid,
validatableObject.GetType().Name,
errorMessages,
memberNames
)
);
}
}
public virtual IEnumerable <DbValidationError> Validate(
EntityValidationContext entityValidationContext,
InternalMemberEntry property)
{
if (property != null && property.CurrentValue == null)
{
return(Enumerable.Empty <DbValidationError>());
}
ValidationContext validationContext = entityValidationContext.ExternalValidationContext;
validationContext.SetDisplayName(property, this._displayAttribute);
IValidatableObject validatableObject = property == null ? (IValidatableObject)entityValidationContext.InternalEntity.Entity : (IValidatableObject)property.CurrentValue;
IEnumerable <ValidationResult> validationResults;
try
{
validationResults = validatableObject.Validate(validationContext);
}
catch (Exception ex)
{
throw new DbUnexpectedValidationException(Strings.DbUnexpectedValidationException_IValidatableObject((object)validationContext.DisplayName, (object)ObjectContextTypeCache.GetObjectType(validatableObject.GetType())), ex);
}
return(DbHelpers.SplitValidationResults(validationContext.MemberName, validationResults ?? Enumerable.Empty <ValidationResult>()));
}
public static ValidationResult Is <TValue>(this IValidatableObject validatable, Func <TValue, bool> predicate, TValue value, string name)
{
return(predicate != null && predicate(value) ? new ValidationResult(validatable.GetType().Name + "." + name, new[] { name }) : null);
}
