private void threadexec(object obj)
{
IDBTask task = (IDBTask)obj;
task.call();
((BasicDBTask)task).Finish();
}
public void execute(IDBTask task)
{
if (conns.Count == 0)
{
throw new Exception("Empty DBConnection pool, task execute failed.");
}
task.setDBConnection(conns[0]);
task.call();
}