public static Topic FindTopic(Chapter chapter, string topicName)
{
return string.IsNullOrEmpty(topicName)
? null
: chapter.Topics.FirstOrDefault(topic => string.Compare(topic.Name, topicName, StringComparison.OrdinalIgnoreCase) == 0);
}
public ChapterModel(Chapter chapter)
{
Name = chapter.Name.Trim();
SortOrder = chapter.SortOrder;
Topics = TopicModel.FromTopicList(chapter.Topics);
}