public void Validate(ModelBindingExecutionContext modelBindingExecutionContext, ModelValidationNode parentNode)
{
if (modelBindingExecutionContext == null)
{
throw new ArgumentNullException("modelBindingExecutionContext");
}
if (SuppressValidation)
{
// no-op
return;
}
// pre-validation steps
ModelValidatingEventArgs eValidating = new ModelValidatingEventArgs(modelBindingExecutionContext, parentNode);
OnValidating(eValidating);
if (eValidating.Cancel)
{
return;
}
ValidateChildren(modelBindingExecutionContext);
ValidateThis(modelBindingExecutionContext, parentNode);
// post-validation steps
ModelValidatedEventArgs eValidated = new ModelValidatedEventArgs(modelBindingExecutionContext, parentNode);
OnValidated(eValidated);
}
public override IModelBinder GetBinder(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
return((from provider in _providers
let binder = provider.GetBinder(modelBindingExecutionContext, bindingContext)
where binder != null
select binder).FirstOrDefault());
}
public override IValueProvider GetValueProvider(ModelBindingExecutionContext modelBindingExecutionContext)
{
if (modelBindingExecutionContext == null)
{
throw new ArgumentNullException("modelBindingExecutionContext");
}
HttpSessionStateBase session = modelBindingExecutionContext.HttpContext.Session;
if (session == null)
{
// session is disabled
return(null);
}
Dictionary <string, object> backingStore = new Dictionary <string, object>(StringComparer.OrdinalIgnoreCase);
foreach (string key in session)
{
if (key != null)
{
backingStore[key] = session[key]; // copy to backing store
}
}
// use the invariant culture since Session contains serialized objects
return(new DictionaryValueProvider <object>(backingStore, CultureInfo.InvariantCulture));
}
public bool BindModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBinderUtil.ValidateBindingContext(bindingContext);
ValueProviderResult vpResult = bindingContext.UnvalidatedValueProvider.GetValue(bindingContext.ModelName);
// case 1: there was no <input ... /> element containing this data
if (vpResult == null)
{
return(false);
}
string base64string = (string)vpResult.ConvertTo(typeof(string));
// case 2: there was an <input ... /> element but it was left blank
if (String.IsNullOrEmpty(base64string))
{
return(false);
}
// Future proofing. If the byte array is actually an instance of System.Data.Linq.Binary
// then we need to remove these quotes put in place by the ToString() method.
string realValue = base64string.Replace("\"", String.Empty);
try {
bindingContext.Model = ConvertByteArray(Convert.FromBase64String(realValue));
return(true);
}
catch {
// corrupt data - just ignore
return(false);
}
}
protected virtual void EnsureModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
if (bindingContext.Model == null)
{
bindingContext.ModelMetadata.Model = CreateModel(modelBindingExecutionContext, bindingContext);
}
}
private void ValidateProperties(ModelBindingExecutionContext modelBindingExecutionContext)
{
// Based off CompositeModelValidator.
ModelStateDictionary modelState = modelBindingExecutionContext.ModelState;
// DevDiv Bugs #227802 - Caching problem in ModelMetadata requires us to manually regenerate
// the ModelMetadata.
object model = ModelMetadata.Model;
ModelMetadata updatedMetadata = ModelMetadataProviders.Current.GetMetadataForType(() => model, ModelMetadata.ModelType);
foreach (ModelMetadata propertyMetadata in updatedMetadata.Properties)
{
// Only want to add errors to ModelState if something doesn't already exist for the property node,
// else we could end up with duplicate or irrelevant error messages.
string propertyKeyRoot = ModelBinderUtil.CreatePropertyModelName(ModelStateKey, propertyMetadata.PropertyName);
if (modelState.IsValidField(propertyKeyRoot))
{
foreach (ModelValidator propertyValidator in propertyMetadata.GetValidators(modelBindingExecutionContext))
{
foreach (ModelValidationResult propertyResult in propertyValidator.Validate(model))
{
string thisErrorKey = ModelBinderUtil.CreatePropertyModelName(propertyKeyRoot, propertyResult.MemberName);
modelState.AddModelError(thisErrorKey, propertyResult.Message);
}
}
}
}
}
public override IModelBinder GetBinder(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBinderUtil.ValidateBindingContext(bindingContext);
Type[] typeArguments = null;
if (ModelType.IsInterface)
{
Type matchingClosedInterface = TypeHelpers.ExtractGenericInterface(bindingContext.ModelType, ModelType);
if (matchingClosedInterface != null)
{
typeArguments = matchingClosedInterface.GetGenericArguments();
}
}
else
{
typeArguments = TypeHelpers.GetTypeArgumentsIfMatch(bindingContext.ModelType, ModelType);
}
if (typeArguments != null)
{
if (SuppressPrefixCheck || bindingContext.UnvalidatedValueProvider.ContainsPrefix(bindingContext.ModelName))
{
return(_modelBinderFactory(typeArguments));
}
}
return(null);
}
public bool BindModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBindingContext newBindingContext = bindingContext;
IModelBinder binder = Providers.GetBinder(modelBindingExecutionContext, bindingContext);
if (binder == null && !String.IsNullOrEmpty(bindingContext.ModelName) &&
bindingContext.ModelMetadata.IsComplexType)
{
// fallback to empty prefix?
newBindingContext = new ModelBindingContext(bindingContext)
{
ModelName = String.Empty,
ModelMetadata = bindingContext.ModelMetadata
};
binder = Providers.GetBinder(modelBindingExecutionContext, newBindingContext);
}
if (binder != null)
{
bool boundSuccessfully = binder.BindModel(modelBindingExecutionContext, newBindingContext);
if (boundSuccessfully)
{
// run validation
newBindingContext.ValidationNode.Validate(modelBindingExecutionContext, parentNode: null);
return(true);
}
}
return(false); // something went wrong
}
private static string GetUserResourceString(ModelBindingExecutionContext modelBindingExecutionContext, string resourceName)
{
#if UNDEF
return(GetUserResourceString(modelBindingExecutionContext, resourceName, DefaultModelBinder.ResourceClassKey));
#endif
return(GetUserResourceString(modelBindingExecutionContext, resourceName, String.Empty));
}
internal void ProcessComplexModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext, ComplexModel complexModel)
{
HashSet <string> requiredProperties;
HashSet <string> skipProperties;
GetRequiredPropertiesCollection(bindingContext.ModelType, out requiredProperties, out skipProperties);
// Are all of the required fields accounted for?
HashSet <string> missingRequiredProperties = new HashSet <string>(requiredProperties);
missingRequiredProperties.ExceptWith(complexModel.Results.Select(r => r.Key.PropertyName));
string missingPropertyName = missingRequiredProperties.FirstOrDefault();
if (missingPropertyName != null)
{
string fullPropertyKey = ModelBinderUtil.CreatePropertyModelName(bindingContext.ModelName, missingPropertyName);
throw Error.BindingBehavior_ValueNotFound(fullPropertyKey);
}
// for each property that was bound, call the setter, recording exceptions as necessary
foreach (var entry in complexModel.Results)
{
ModelMetadata propertyMetadata = entry.Key;
ComplexModelResult complexModelResult = entry.Value;
if (complexModelResult != null)
{
SetProperty(modelBindingExecutionContext, bindingContext, propertyMetadata, complexModelResult);
bindingContext.ValidationNode.ChildNodes.Add(complexModelResult.ValidationNode);
}
}
}
// Used when the ValueProvider contains the collection to be bound as multiple elements, e.g. foo[0], foo[1].
private static List <TElement> BindComplexCollection(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
string indexPropertyName = ModelBinderUtil.CreatePropertyModelName(bindingContext.ModelName, "index");
ValueProviderResult vpResultIndex = bindingContext.UnvalidatedValueProvider.GetValue(indexPropertyName);
IEnumerable <string> indexNames = CollectionModelBinderUtil.GetIndexNamesFromValueProviderResult(vpResultIndex);
return(BindComplexCollectionFromIndexes(modelBindingExecutionContext, bindingContext, indexNames));
}
private static string GetResourceCommon(ModelBindingExecutionContext modelBindingExecutionContext, ModelMetadata modelMetadata, object incomingValue, Func <ModelBindingExecutionContext, string> resourceAccessor)
{
string displayName = modelMetadata.GetDisplayName();
string errorMessageTemplate = resourceAccessor(modelBindingExecutionContext);
string errorMessage = String.Format(CultureInfo.CurrentCulture, errorMessageTemplate, incomingValue, displayName);
return(errorMessage);
}
public IValueProvider GetValueProvider(ModelBindingExecutionContext modelBindingExecutionContext)
{
if (modelBindingExecutionContext == null)
{
throw new ArgumentNullException("modelBindingExecutionContext");
}
return(new UserProfileValueProvider(modelBindingExecutionContext));
}
public override IValueProvider GetValueProvider(ModelBindingExecutionContext modelBindingExecutionContext)
{
if (modelBindingExecutionContext == null)
{
throw new ArgumentNullException("modelBindingExecutionContext");
}
return(new FormValueProvider(modelBindingExecutionContext));
}
protected virtual void SetProperty(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext, ModelMetadata propertyMetadata, ComplexModelResult complexModelResult)
{
PropertyDescriptor propertyDescriptor = TypeDescriptorHelper.Get(bindingContext.ModelType).GetProperties().Find(propertyMetadata.PropertyName, true /* ignoreCase */);
if (propertyDescriptor == null || propertyDescriptor.IsReadOnly)
{
return; // nothing to do
}
object value = complexModelResult.Model ?? GetPropertyDefaultValue(propertyDescriptor);
propertyMetadata.Model = value;
// 'Required' validators need to run first so that we can provide useful error messages if
// the property setters throw, e.g. if we're setting entity keys to null. See comments in
// DefaultModelBinder.SetProperty() for more information.
if (value == null)
{
string modelStateKey = complexModelResult.ValidationNode.ModelStateKey;
if (bindingContext.ModelState.IsValidField(modelStateKey))
{
ModelValidator requiredValidator = ModelValidatorProviders.Providers.GetValidators(propertyMetadata, modelBindingExecutionContext).Where(v => v.IsRequired).FirstOrDefault();
if (requiredValidator != null)
{
foreach (ModelValidationResult validationResult in requiredValidator.Validate(bindingContext.Model))
{
bindingContext.ModelState.AddModelError(modelStateKey, validationResult.Message);
}
}
}
}
if (value != null || TypeHelpers.TypeAllowsNullValue(propertyDescriptor.PropertyType))
{
try {
propertyDescriptor.SetValue(bindingContext.Model, value);
}
catch (Exception ex) {
// don't display a duplicate error message if a binding error has already occurred for this field
string modelStateKey = complexModelResult.ValidationNode.ModelStateKey;
if (bindingContext.ModelState.IsValidField(modelStateKey))
{
bindingContext.ModelState.AddModelError(modelStateKey, ex);
}
}
}
else
{
// trying to set a non-nullable value type to null, need to make sure there's a message
string modelStateKey = complexModelResult.ValidationNode.ModelStateKey;
if (bindingContext.ModelState.IsValidField(modelStateKey))
{
complexModelResult.ValidationNode.Validated += CreateNullCheckFailedHandler(modelBindingExecutionContext, propertyMetadata, value);
}
}
}
protected override object FetchValue(string key)
{
StateBag pageViewState = ModelBindingExecutionContext.GetService <StateBag>();
if (pageViewState != null)
{
return(pageViewState[key]);
}
return(null);
}
internal IModelBinder GetRequiredBinder(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
IModelBinder binder = GetBinder(modelBindingExecutionContext, bindingContext);
if (binder == null)
{
throw Error.ModelBinderProviderCollection_BinderForTypeNotFound(bindingContext.ModelType);
}
return(binder);
}
public DataAnnotationsModelValidator(ModelMetadata metadata, ModelBindingExecutionContext context, ValidationAttribute attribute)
: base(metadata, context)
{
if (attribute == null)
{
throw new ArgumentNullException("attribute");
}
Attribute = attribute;
}
public ModelValidatedEventArgs(ModelBindingExecutionContext modelBindingExecutionContext, ModelValidationNode parentNode)
{
if (modelBindingExecutionContext == null)
{
throw new ArgumentNullException("modelBindingExecutionContext");
}
ModelBindingExecutionContext = modelBindingExecutionContext;
ParentNode = parentNode;
}
private static RouteValueDictionary GetRouteValues(ModelBindingExecutionContext modelBindingExecutionContext)
{
RouteData routeData = modelBindingExecutionContext.GetService <RouteData>();
if (routeData != null)
{
return(routeData.Values);
}
return(new RouteValueDictionary());
}
private void ValidateChildren(ModelBindingExecutionContext modelBindingExecutionContext)
{
foreach (ModelValidationNode child in ChildNodes)
{
child.Validate(modelBindingExecutionContext, this);
}
if (ValidateAllProperties)
{
ValidateProperties(modelBindingExecutionContext);
}
}
public override IModelBinder GetBinder(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBinderUtil.ValidateBindingContext(bindingContext);
if (!bindingContext.ModelMetadata.IsReadOnly && bindingContext.ModelType.IsArray &&
bindingContext.UnvalidatedValueProvider.ContainsPrefix(bindingContext.ModelName))
{
Type elementType = bindingContext.ModelType.GetElementType();
return((IModelBinder)Activator.CreateInstance(typeof(ArrayModelBinder <>).MakeGenericType(elementType)));
}
return(null);
}
public virtual bool BindModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBinderUtil.ValidateBindingContext(bindingContext);
ValueProviderResult vpResult = bindingContext.UnvalidatedValueProvider.GetValue(bindingContext.ModelName, skipValidation: !bindingContext.ValidateRequest);
List <TElement> boundCollection = (vpResult != null)
? BindSimpleCollection(modelBindingExecutionContext, bindingContext, vpResult.RawValue, vpResult.Culture)
: BindComplexCollection(modelBindingExecutionContext, bindingContext);
bool retVal = CreateOrReplaceCollection(modelBindingExecutionContext, bindingContext, boundCollection);
return(retVal);
}
public override IModelBinder GetBinder(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBinderUtil.ValidateBindingContext(bindingContext);
if (bindingContext.UnvalidatedValueProvider.ContainsPrefix(bindingContext.ModelName))
{
return(CollectionModelBinderUtil.GetGenericBinder(typeof(IDictionary <,>), typeof(Dictionary <,>), typeof(DictionaryModelBinder <,>), bindingContext.ModelMetadata));
}
else
{
return(null);
}
}
internal static List <TElement> BindComplexCollectionFromIndexes(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext, IEnumerable <string> indexNames)
{
bool indexNamesIsFinite;
if (indexNames != null)
{
indexNamesIsFinite = true;
}
else
{
indexNamesIsFinite = false;
indexNames = CollectionModelBinderUtil.GetZeroBasedIndexes();
}
List <TElement> boundCollection = new List <TElement>();
foreach (string indexName in indexNames)
{
string fullChildName = ModelBinderUtil.CreateIndexModelName(bindingContext.ModelName, indexName);
ModelBindingContext childBindingContext = new ModelBindingContext(bindingContext)
{
ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(null, typeof(TElement)),
ModelName = fullChildName
};
object boundValue = null;
IModelBinder childBinder = bindingContext.ModelBinderProviders.GetBinder(modelBindingExecutionContext, childBindingContext);
if (childBinder != null)
{
if (childBinder.BindModel(modelBindingExecutionContext, childBindingContext))
{
boundValue = childBindingContext.Model;
// merge validation up
bindingContext.ValidationNode.ChildNodes.Add(childBindingContext.ValidationNode);
}
}
else
{
// should we even bother continuing?
if (!indexNamesIsFinite)
{
break;
}
}
boundCollection.Add(ModelBinderUtil.CastOrDefault <TElement>(boundValue));
}
return(boundCollection);
}
public override IModelBinder GetBinder(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBinderUtil.ValidateBindingContext(bindingContext);
if (bindingContext.ModelType == ModelType)
{
if (SuppressPrefixCheck || bindingContext.UnvalidatedValueProvider.ContainsPrefix(bindingContext.ModelName))
{
return(_modelBinderFactory());
}
}
return(null);
}
protected virtual IEnumerable <ModelMetadata> GetMetadataForProperties(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
// keep a set of the required properties so that we can cross-reference bound properties later
HashSet <string> requiredProperties;
HashSet <string> skipProperties;
GetRequiredPropertiesCollection(bindingContext.ModelType, out requiredProperties, out skipProperties);
return(from propertyMetadata in bindingContext.ModelMetadata.Properties
let propertyName = propertyMetadata.PropertyName
let shouldUpdateProperty = requiredProperties.Contains(propertyName) || !skipProperties.Contains(propertyName)
where shouldUpdateProperty && CanUpdateProperty(propertyMetadata)
select propertyMetadata);
}
protected ModelValidator(ModelMetadata metadata, ModelBindingExecutionContext modelBindingExecutionContext)
{
if (metadata == null)
{
throw new ArgumentNullException("metadata");
}
if (modelBindingExecutionContext == null)
{
throw new ArgumentNullException("modelBindingExecutionContext");
}
Metadata = metadata;
ModelBindingExecutionContext = modelBindingExecutionContext;
}
private ComplexModel CreateAndPopulateComplexModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext, IEnumerable <ModelMetadata> propertyMetadatas)
{
// create a Complex Model and call into the Complex Model binder
ComplexModel originalComplexModel = new ComplexModel(bindingContext.ModelMetadata, propertyMetadatas);
ModelBindingContext complexModelBindingContext = new ModelBindingContext(bindingContext)
{
ModelMetadata = MetadataProvider.GetMetadataForType(() => originalComplexModel, typeof(ComplexModel)),
ModelName = bindingContext.ModelName
};
IModelBinder complexModelBinder = bindingContext.ModelBinderProviders.GetRequiredBinder(modelBindingExecutionContext, complexModelBindingContext);
complexModelBinder.BindModel(modelBindingExecutionContext, complexModelBindingContext);
return((ComplexModel)complexModelBindingContext.Model);
}
public bool BindModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext)
{
ModelBinderUtil.ValidateBindingContext(bindingContext, typeof(KeyValuePair <TKey, TValue>), true /* allowNullModel */);
TKey key;
bool keyBindingSucceeded = KeyValuePairModelBinderUtil.TryBindStrongModel <TKey>(modelBindingExecutionContext, bindingContext, "key", MetadataProvider, out key);
TValue value;
bool valueBindingSucceeded = KeyValuePairModelBinderUtil.TryBindStrongModel <TValue>(modelBindingExecutionContext, bindingContext, "value", MetadataProvider, out value);
if (keyBindingSucceeded && valueBindingSucceeded)
{
bindingContext.Model = new KeyValuePair <TKey, TValue>(key, value);
}
return(keyBindingSucceeded || valueBindingSucceeded);
}