// Returns a collection of properties (columns) for the type, each with attributes
// for that table
public override PropertyDescriptorCollection GetProperties()
{
PropertyDescriptorCollection originalCollection = base.GetProperties();
bool customDescriptorsCreated = false;
List <PropertyDescriptor> tempPropertyDescriptors = new List <PropertyDescriptor>();
foreach (PropertyDescriptor propDescriptor in originalCollection)
{
PropertyInfo propInfo = Type.GetProperty(propDescriptor.Name, propDescriptor.PropertyType);
List <Attribute> newMetadata = InMemoryMetadataManager.GetColumnAttributes(propInfo);
if (newMetadata.Count > 0)
{
tempPropertyDescriptors.Add(new PropertyDescriptorWrapper(propDescriptor, newMetadata.ToArray()));
customDescriptorsCreated = true;
}
else
{
tempPropertyDescriptors.Add(propDescriptor);
}
}
if (customDescriptorsCreated)
{
// only create a new collection if it is necessary
return(new PropertyDescriptorCollection(tempPropertyDescriptors.ToArray(), true));
}
else
{
return(originalCollection);
}
}
// Returns the collection of attributes for a given type (table)
public override AttributeCollection GetAttributes()
{
AttributeCollection baseAttributes = base.GetAttributes();
List <Attribute> extraAttributes = InMemoryMetadataManager.GetTableAttributes(Type);
if (extraAttributes.Count != 0)
{
// only create a new collection if it is necessary
return(AttributeCollection.FromExisting(baseAttributes, extraAttributes.ToArray()));
}
else
{
return(baseAttributes);
}
}