private object ReadCollectionProperty_InitializeCollection(PropertyInfo property, Type targetType, IReader reader)
{
object collection = null;
if (reader.CanSet(property))
{
if (property.PropertyType.IsArray)
{
collection = Activator.CreateInstance(typeof(List <>).MakeGenericType(targetType));
}
else
{
collection = Activator.CreateInstance(property.PropertyType);
}
}
else
{
if (reader.CanGet(property))
{
collection = reader.Get(property);
}
if (collection == null)
{
throw new InvalidOperationException($"The value of the property {property.DeclaringType.FullName}.{property.Name} has no set accessor and is not initialized by default");
}
}
return(collection);
}
private bool ReadCollectionProperty(XmlElement element, BXmlPropertyAttribute propertyAttribute, PropertyInfo property, IReader reader, Type targetType, BXmlElementAttribute elementAttribute1, BXmlSelectAttribute selectAttribute)
{
object collection = ReadCollectionProperty_InitializeCollection(property, targetType, reader);
MethodInfo method = collection.GetType().GetMethod("Add", new Type[] { targetType });
if (method == null)
{
throw new InvalidOperationException($"The type of the property {property.DeclaringType.FullName}.{property.Name} has no Add({targetType.FullName}) method");
}
var collectionElement = FindChildElement(element, propertyAttribute.Name);
if (collectionElement == null)
{
return(false);
}
object[] parameters = new object[] { null };
Func <XmlElement, object> deserializer;
if (elementAttribute1 != null)
{
deserializer = e => Deserialize(e, targetType);
}
else
{
deserializer = e => Deserialize(e, selectAttribute.Options);
}
foreach (XmlNode node in collectionElement.ChildNodes)
{
if (node is not XmlElement childElement)
{
continue;
}
parameters[0] = deserializer(childElement);
method.Invoke(collection, parameters);
}
if (reader.CanSet(property))
{
if (property.PropertyType.IsArray)
{
collection = collection.GetType().GetMethod("ToArray", new Type[] { }).Invoke(collection, Array.Empty <object>());
}
reader.Set(property, collection);
}
return(true);
}