相关疑难解决方法(0)

你能帮我解决这个错误吗？
Cannot access a disposed object. Object name: 'DataContext accessed after Dispose.'.

在我的GUI中

 private void InitializePage()
    {
        cbCategory.DataSource = stock.StockCategory.Get();

    }

在Datamodel

 public IEnumerable<StockCategory> Get()
    {
        using (leDataContext db = new leDataContext())
        {
            try
            {
                var r = from s in db.StockCategories
                        select s;
                return r;
            }
            catch (Exception ex)
            {
                Logger.Error(typeof(StockCategory), ex.ToString());
                throw;
            }

        }

    }