private static ValidationResult Validate(ValidationContext context)
{
var properties = context.ObjectType.GetProperties();
if (context.ObjectInstance is IValidatableObject)
{
IValidatableObject valid = (IValidatableObject)context.ObjectInstance;
var validationResults = valid.Validate(context);
if (validationResults != null && validationResults.Count() > 0)
{
return(valid.Validate(context).FirstOrDefault());
}
}
foreach (var property in properties)
{
var validationAttributes = property.GetCustomAttributes(false).OfType <ValidationAttribute>();
foreach (var attribute in validationAttributes)
{
bool isValid = attribute.IsValid(property.GetValue(context.ObjectInstance));
if (!isValid)
{
return(new ValidationResult(attribute.ErrorMessage, new[] { property.Name }));
}
}
}
return(null);
}
public override IEnumerable <ModelValidationResult> Validate(object container)
{
// NOTE: Container is never used here, because IValidatableObject doesn't give you
// any way to get access to your container.
object model = Metadata.Model;
if (model == null)
{
return(Enumerable.Empty <ModelValidationResult>());
}
IValidatableObject validatable = model as IValidatableObject;
if (validatable == null)
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture,
"The model object inside the metadata claimed to be compatible with {0}, but was actually {1}.",
typeof(IValidatableObject).FullName,
model.GetType().FullName
)
);
}
ValidationContext validationContext = new ValidationContext(validatable, null, null)
{
DisplayName = Metadata.DisplayName,
MemberName = Metadata.PropertyName
};
return(ConvertResults(validatable.Validate(validationContext)));
}
public override IEnumerable <ModelValidationResult> Validate(object container)
{
// NOTE: Container is never used here, because IValidatableObject doesn't give you
// any way to get access to your container.
object model = Metadata.Model;
if (model == null)
{
return(Enumerable.Empty <ModelValidationResult>());
}
IValidatableObject validatable = model as IValidatableObject;
if (validatable == null)
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture,
MvcResources.ValidatableObjectAdapter_IncompatibleType,
typeof(IValidatableObject).FullName,
model.GetType().FullName));
}
ValidationContext validationContext = new ValidationContext(validatable, null, null);
return(ConvertResults(validatable.Validate(validationContext)));
}
public static void ForceValidation(ModelStateDictionary stateDictionary, Object m)
{
IValidatableObject model = null;
if (m is IValidatableObject)
{
model = m as IValidatableObject;
IEnumerable <ValidationResult> errors = model.Validate(new ValidationContext(model, null, null));
List <string> modelStateKeys = stateDictionary.Keys.ToList();
List <ModelState> modelStateValues = stateDictionary.Values.ToList();
foreach (ValidationResult error in errors)
{
List <string> errorMemberNames = error.MemberNames.ToList();
if (errorMemberNames.Count == 0)
{
errorMemberNames.Add(String.Empty);
}
foreach (string memberName in errorMemberNames)
{
int index = modelStateKeys.IndexOf(memberName);
if (index < 0 || !modelStateValues[index].Errors.Any(i => i.ErrorMessage == error.ErrorMessage))
{
stateDictionary.AddModelError(memberName, error.ErrorMessage);
}
}
}
}
}
public override IEnumerable <ModelValidationResult> Validate(
ModelMetadata metadata,
object container
)
{
// NOTE: Container is never used here, because IValidatableObject doesn't give you
// any way to get access to your container.
object model = metadata.Model;
if (model == null)
{
return(Enumerable.Empty <ModelValidationResult>());
}
IValidatableObject validatable = model as IValidatableObject;
if (validatable == null)
{
throw Error.InvalidOperation(
SRResources.ValidatableObjectAdapter_IncompatibleType,
model.GetType()
);
}
ValidationContext validationContext = new ValidationContext(validatable, null, null);
return(ConvertResults(validatable.Validate(validationContext)));
}
public ObjectValidationResult ValidateObject(IValidatableObject validatableObject)
{
if (validatableObject == null)
{
return(new ObjectValidationResult
{
Message = "Object can not be null."
});
}
var validationResults =
validatableObject.Validate(new ValidationContext(this));
var enumerable =
validationResults as IList <ValidationResult> ?? validationResults.ToList();
if (enumerable.Any())
{
return(new ObjectValidationResult
{
Message = enumerable.First().ErrorMessage
});
}
return(new ObjectValidationResult
{
Success = true
});
}
/// <summary>
/// Validates a column of an IValidatableObject for use with IDataErrorInfo.
/// </summary>
/// <param name="instance"></param>
/// <param name="memberName"></param>
/// <returns>Validation error, or empty when valid.</returns>
public static string Validate(this IValidatableObject instance, string memberName)
{
var errors = instance.Validate(null)
.Where(vr => vr.MemberNames.Contains(memberName))
.ToList();
return(ValidateInner(errors));
}
public static List <ValidationResult> GetValidationErrors(IValidatableObject obj)
{
var result = new List <ValidationResult>();
var validationContext = new ValidationContext(obj);
Validator.TryValidateObject(obj, validationContext, result);
obj.Validate(validationContext);
return(result);
}
public bool modelStateIsValidAfterReRunValidationOnComplexAttributes(
ModelStateDictionary modelState, IValidatableObject model)
{
modelState.Clear();
var errors = model.Validate(new ValidationContext(model, null, null));
foreach(var error in errors)
foreach(var memberName in error.MemberNames)
modelState.AddModelError(memberName, error.ErrorMessage);
return modelState.IsValid;
}
/// <summary>
/// Validates this instance, and throws an exception when validation fails.
/// </summary>
/// <typeparam name="TException">The type of the exception.</typeparam>
/// <param name="instance">The instance.</param>
public static void Validate <TException>(this IValidatableObject instance)
where TException : Exception
{
var validationErrorMessage = instance.Validate();
if (!string.IsNullOrEmpty(validationErrorMessage))
{
throw (Exception)Activator.CreateInstance(typeof(TException), validationErrorMessage);
}
}
public static string RaiseValidationAndGetResult(this IValidatableObject validatableObject, ValidationContext context)
{
string result = null;
var validationResult = validatableObject.Validate(context);
if (validationResult.Any())
{
result = string.Join(Environment.NewLine, validationResult.Select(x => x.ErrorMessage));
}
return(result);
}
public static void RunCustomValidation(this ModelStateDictionary modelState, IValidatableObject viewModel)
{
var errors = viewModel.Validate(new ValidationContext(viewModel, null, null));
foreach (var error in errors)
{
foreach (var memberName in error.MemberNames)
{
modelState.AddModelError(memberName, error.ErrorMessage);
}
}
}
public virtual IReadOnlyList <ValidationResult> Validate(object validatingObject)
{
var validationErrors = new List <ValidationResult>();
if (validatingObject is IValidatableObject)
{
IValidatableObject o = validatingObject as IValidatableObject;
validationErrors.AddRange(o.Validate(new ValidationContext(o)));
}
return(validationErrors);
}
public static bool IsValidField(this ModelStateDictionary modelSate, string key, IValidatableObject validatableObject)
{
if (!modelSate.IsValidField(key)) return false;
var validationResults = validatableObject.Validate(new ValidationContext(validatableObject, null, null));
foreach (var validationResult in validationResults)
if (validationResult.MemberNames.Contains(key))
{
modelSate.AddModelError(key, validationResult.ErrorMessage);
return false;
}
return true;
}
public static ModelStateDictionary MergeWithValidatableObject(this ModelStateDictionary modelState, IValidatableObject obj)
{
IEnumerable<ValidationResult> errors = obj.Validate(new ValidationContext(obj, null, null));
foreach (ValidationResult error in errors)
foreach (string memberName in error.MemberNames)
{
if (modelState.ContainsKey(memberName))
modelState.AddModelError(memberName, error.ErrorMessage);
else
modelState.AddModelError(memberName, error.ErrorMessage);
}
return modelState;
}
public static void IsValid(this IValidatableObject obj)
{
if (obj == null)
{
return;
}
var result = obj.Validate(null);
if (result.Any())
{
throw new ApplicationException(result.First().ErrorMessage);
}
}
/// <summary>
/// Internal iterator to enumerate all validation errors for the given object instance.
/// </summary>
/// <param name="instance">Object instance to test.</param>
/// <param name="validationContext">Describes the object type.</param>
/// <param name="validateAllProperties">if <c>true</c> also validates all properties.</param>
/// <param name="breakOnFirstError">Whether to break on the first error or validate everything.</param>
/// <returns>A collection of validation errors that result from validating the <paramref name="instance"/> with
/// the given <paramref name="validationContext"/>.</returns>
/// <exception cref="ArgumentNullException">When <paramref name="instance"/> is null.</exception>
/// <exception cref="ArgumentNullException">When <paramref name="validationContext"/> is null.</exception>
/// <exception cref="ArgumentException">When <paramref name="instance"/> doesn't match the
/// <see cref="ValidationContext.ObjectInstance"/> on <paramref name="validationContext"/>.</exception>
private static IEnumerable <ValidationError> GetObjectValidationErrors(object instance, ValidationContext validationContext, bool validateAllProperties, bool breakOnFirstError)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (validationContext == null)
{
throw new ArgumentNullException("validationContext");
}
// Step 1: Validate the object properties' validation attributes
List <ValidationError> errors = new List <ValidationError>();
errors.AddRange(GetObjectPropertyValidationErrors(instance, validationContext, validateAllProperties, breakOnFirstError));
// We only proceed to Step 2 if there are no errors
if (errors.Any())
{
return(errors);
}
// Step 2: Validate the object's validation attributes
IEnumerable <ValidationAttribute> attributes = _store.GetTypeValidationAttributes(validationContext);
errors.AddRange(GetValidationErrors(instance, validationContext, attributes, breakOnFirstError));
#if !SILVERLIGHT
// We only proceed to Step 3 if there are no errors
if (errors.Any())
{
return(errors);
}
// Step 3: Test for IValidatableObject implementation
IValidatableObject validatable = instance as IValidatableObject;
if (validatable != null)
{
IEnumerable <ValidationResult> results = validatable.Validate(validationContext);
foreach (ValidationResult result in results.Where(r => r != ValidationResult.Success))
{
errors.Add(new ValidationError(null, instance, result));
}
}
#endif
return(errors);
}
public void TestValidate()
{
//arrange
var rule = new IsNotNullOrEmptyRule <string>("Value cannot be null");
_validatableObject.Value = "Hello World";
_validatableObject.AddValidationRule(rule);
//act
var actual = _validatableObject.Validate();
//assert
Assert.AreEqual(true, actual);
}
// *******************************************************************
/// <summary>
/// This method validates the current object and returns the result
/// of any failing validations.
/// </summary>
/// <returns>A list of failing validations.</returns>
/// <exception cref="ArgumentException">This exception is thrown whenever
/// the argument is missing, or null.</exception>
public static IEnumerable <ValidationResult> Validate(
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)
);
// Return the results.
return(results);
}
public static bool IsValid(this IValidatableObject obj, ValidationContext context = null)
{
if (obj == null)
{
return(false);
}
if (context == null)
{
context = new ValidationContext(obj);
}
var result = obj.Validate(context);
return(!result.Any());
}
/// <summary>
/// Evaluates the condition.
/// </summary>
/// <returns></returns>
protected override bool EvaluateIsValid()
{
if (_validatorCollection == null)
{
_validatorCollection = new PageValidatorCollection(Page);
}
ICollection <ModelPropertyValidator> validators = GetPropertyValidators();
if (validators.Count > 0)
{
Type modelType = GetModelType();
IValidatableObject model = Activator.CreateInstance(modelType) as IValidatableObject;
if (model != null)
{
// set the model with the form values
List <ValidationResult> results = new List <ValidationResult>();
foreach (ModelPropertyValidator propertyValidator in validators)
{
PropertyInfo property = modelType.GetProperty(propertyValidator.PropertyName);
object propertyValue;
try
{
propertyValue = GetModelPropertyValue(property.Name, propertyValidator.ControlToValidate);
}
catch (ValidationException ex)
{
results.Add(ex.ValidationResult);
continue;
}
property.SetValue(model, propertyValue, null);
}
results.AddRange(model.Validate(new ValidationContext(model, null, null)));
foreach (ValidationResult result in results)
{
_validatorCollection.Add(new ValidationError(result.ErrorMessage, ValidationGroup));
}
return(!results.Any());
}
}
return(true);
}
private static void ValidValidatableObject(object model, Type modelType, ModelValid modelValid, string modelName)
{
IValidatableObject validatableObject = model as IValidatableObject;
if (validatableObject == null)
{
return;
}
ValidationContext validationContext = new ValidationContext(model);
foreach (var validResult in validatableObject.Validate(validationContext))
{
modelValid.ValidResults.Add(new ValidFailure()
{
ErrorMessage = validResult.ErrorMessage,
MemberNames = validResult.MemberNames,
Name = modelName
});
}
}
private void ValidateBindings(IValidatableObject subject, ValidationContext context)
{
if (subject is null)
{
return;
}
var errors = subject.Validate(context).ToList();
var bindingsOfSameSubject = this.bindings.Where(x => this.GetBindingDataSource(x.DataSource) == subject);
foreach (var binding in bindingsOfSameSubject)
{
var boundProperty = binding.BindingMemberInfo.BindingMember;
var errorMessage = errors
.FirstOrDefault(x => x.MemberNames.Contains(boundProperty))
?.ErrorMessage;
this.ErrorProvider?.SetError(binding.Control, errorMessage);
}
}
public static bool IsValid(this IValidatableObject input, out string error)
{
EnsureArg.IsNotNull(input, nameof(input));
var builder = new StringBuilder();
var validationErrors = input.Validate(new ValidationContext(input));
if (!validationErrors.Any())
{
error = null;
return(true);
}
builder.Append("Validation errors: ");
foreach (var validationError in validationErrors)
{
builder.AppendLine($"{validationError.ErrorMessage}");
}
error = builder.ToString();
return(false);
}
// *******************************************************************
/// <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 override IEnumerable<ModelValidationResult> Validate(object container)
//{
// object model = base.Metadata.Model;
// if(model != null)
// {
// // Ask StructureMap to do setter injection for all properties decorated with SetterProperty attribute.
// _container.BuildUp(model);
// }
// return base.Validate(container);
//}
public override IEnumerable <ModelValidationResult> Validate(object container)
{
object model = base.Metadata.Model;
if (model != null)
{
IValidatableObject instance = model as IValidatableObject;
if (instance == null)
{
//the base implementation will throw an exception after
//doing the same check - so let's retain that behaviour
return(base.Validate(container));
}
/* replacement for the core functionality */
ValidationContext validationContext = CreateValidationContext(instance);
return(this.ConvertResults(instance.Validate(validationContext)));
}
else
{
return(base.Validate(container)); /*base returns an empty set
* of values for null. */
}
}
public static void EnsureIsValid(this IValidatableObject obj, ValidationContext context = null)
{
if (obj == null)
{
return;
}
if (context == null)
{
context = new ValidationContext(obj);
}
var result = obj.Validate(context);
var validationResults = result as ValidationResult[] ?? result.ToArray();
if (validationResults.Any())
{
var errors = from e in validationResults
select new ErrorMessage(e.ErrorMessage, string.Join(",", e.MemberNames));
throw new BusinessException(errors.ToList());
}
}
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 GlogErrorsResult(IValidatableObject validatable)
{
var validationResults = validatable.Validate(new ValidationContext(validatable));
errors = validationResults.Select(vr => vr.ErrorMessage).ToList();
}
public async Task <IActionResult> OnPost()
{
// Remove all errors from required fields that are not in the Form
foreach (var key in ModelState.Keys.Where(k => ModelState[k].Errors.Count > 0 && !this.Request.Form.Keys.Any(ek => ek == k)))
{
ModelState[key].Errors.Clear();
ModelState[key].ValidationState = ModelValidationState.Valid;
}
// Test for IValidatableObject implementation
IValidatableObject validatable = this.EngineView;
var validationContext = new ValidationContext(this.EngineView, this.HttpContext.RequestServices, null);
var results = validatable.Validate(validationContext);
foreach (ValidationResult result in results.Where(r => r != ValidationResult.Success))
{
ModelState.AddModelError("", result.ErrorMessage);
}
if (!ModelState.IsValid)
{
return(Page());
}
try
{
YEngine engine;
// Merge engine from repository with the one we are editing here
if (!this.EngineView.IsNew)
{
var engineGetAction = await this.enginesController.GetEngineAsync(this.EngineView.Engine.Id).ConfigureAwait(false);
if (engineGetAction.HasError)
{
throw new Exception(engineGetAction.Error?.ToString());
}
engine = engineGetAction.Value;
engine.EngineName = this.EngineView.EngineName;
engine.EngineType = this.EngineView.EngineType;
engine.Owners = this.EngineView.Engine.Owners;
engine.Members = this.EngineView.Engine.Members;
engine.Comments = this.EngineView.Comments;
}
else
{
engine = this.EngineView.Engine;
}
var saveEngineAction = await this.enginesController.SaveEngineAsync(engine.Id, engine);
if (saveEngineAction.HasError)
{
throw new Exception(saveEngineAction.Error?.ToString());
}
return(Redirect("/Engines/Index"));
}
catch (Exception ex)
{
ModelState.AddModelError("", ex.Message);
return(Page());
}
}
public ObjectValidationResult ValidateObject(IValidatableObject validatableObject)
{
if (validatableObject == null)
{
return new ObjectValidationResult
{
Message = "Object can not be null."
};
}
var validationResults =
validatableObject.Validate(new ValidationContext(this));
var enumerable =
validationResults as IList<ValidationResult> ?? validationResults.ToList();
if (enumerable.Any())
{
return new ObjectValidationResult
{
Message = enumerable.First().ErrorMessage
};
}
return new ObjectValidationResult
{
Success = true
};
}
