private void SetupTopicList()
{
TopicService topicService = new TopicService(Ioc.GetInstance<ITopicRepository>());
var topics = topicService.GetAllTopics().OrderByDescending(x => x.CreatedDate);
foreach (var topic in topics)
{
ddlTopics.Items.Add(new ListItem(topic.TopicName, topic.TopicId.ToString()));
}
ListItem item = new ListItem("Please select a Topic", "-1");
ddlTopics.Items.Insert(0, item);
item.Selected = true;
}