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);
}
// Used when the ValueProvider contains the collection to be bound as a single element, e.g. the raw value
// is [ "1", "2" ] and needs to be converted to an int[].
internal static List <TElement> BindSimpleCollection(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext, object rawValue, CultureInfo culture)
{
if (rawValue == null)
{
return(null); // nothing to do
}
List <TElement> boundCollection = new List <TElement>();
object[] rawValueArray = ModelBinderUtil.RawValueToObjectArray(rawValue);
foreach (object rawValueElement in rawValueArray)
{
ModelBindingContext innerBindingContext = new ModelBindingContext(bindingContext)
{
ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(null, typeof(TElement)),
ModelName = bindingContext.ModelName,
ValueProvider = new ValueProviderCollection() // aggregate value provider
{
new ElementalValueProvider(bindingContext.ModelName, rawValueElement, culture), // our temporary provider goes at the front of the list
bindingContext.ValueProvider
}
};
object boundValue = null;
IModelBinder childBinder = bindingContext.ModelBinderProviders.GetBinder(modelBindingExecutionContext, innerBindingContext);
if (childBinder != null)
{
if (childBinder.BindModel(modelBindingExecutionContext, innerBindingContext))
{
boundValue = innerBindingContext.Model;
bindingContext.ValidationNode.ChildNodes.Add(innerBindingContext.ValidationNode);
}
}
boundCollection.Add(ModelBinderUtil.CastOrDefault <TElement>(boundValue));
}
return(boundCollection);
}
