private void btDelete_Click(object sender, EventArgs e)
{
int i = lbTopic.SelectedIndex;
if (i == -1)
{
MessageBox.Show("Select a topic to change");
return;
}
else
{
string topicID = topicList[lbTopic.SelectedIndex].TopicID;
BOTopic bot = new BOTopic();
bool success = bot.Delete(topicID);
if (success)
{
MessageBox.Show("Delete topic success!");
loadTopicList();
}
else MessageBox.Show("Failed to delete a topic!");
txtTopicID.Clear();
txtTopicName.Clear();
btUpdate.Enabled = false; btDelete.Enabled = false;
loadTopicList();
}
}
