public void Estimate(int id, int effortInHours)
        {
            QueryManager queryManager = new QueryManager();

            WorkItem item = queryManager.ItemById(id);

            item["Original Estimate"] = effortInHours;
            item["Remaining Work"] = effortInHours;
            item["Complited Work"] = 0;

            item.Save();
        }
 public WorkItemManager()
 {
     _queryManager = new QueryManager();
 }