如何删除DataReader.Read（）循环延迟

Question

约45,000个数据检索存在以下问题。

当我使用DataReader.Read（）调用每一行时，大约每15行就有一个延迟。

我试图通过链接解决问题，但失败了： Slow performance of SqlDataReader

下面是我要解决的问题的示例代码。

        using (var reader = DbLib.SqlHelper.ExecuteReader(trans.Transaction, System.Data.CommandType.Text, query, parameters))
        {
            DateTime now = DateTime.Now;

            while (reader.Read())
            {
                var item = new Item();

                item.A= reader["A"] as string;
                item.B= reader["B"] as string;
                item.C= reader["C"] as string;

                list.Add(item);

                System.Diagnostics.Trace.WriteLine(DateTime.Now - now);
                now = DateTime.Now;
            }
        }

    //...
    //00:00:00          <<- 1
    //00:00:00.0009966  <<- 2
    //00:00:00          <<- 3
    //00:00:00          <<- 4
    //00:00:00          <<- 5
    //00:00:00          <<- 6
    //00:00:00          <<- 7
    //00:00:00          <<- 8
    //00:00:00          <<- 9
    //00:00:00          <<- 10
    //00:00:00          <<- 11
    //00:00:00          <<- 12
    //00:00:00          <<- 13
    //00:00:00          <<- 14
    //00:00:01.5997433  <<- Delays occurs on the 15th line after the last dealy
    //00:00:00          <<- 1
    //00:00:00          <<- 2
    //00:00:00          <<- 3
    //00:00:00          <<- 4
    //00:00:00          <<- 5
    //00:00:00.0009984  <<- 6
    //00:00:00          <<- 7
    //00:00:00          <<- 8
    //00:00:00          <<- 9
    //00:00:00          <<- 10
    //00:00:00          <<- 11
    //00:00:00          <<- 12
    //00:00:00.0009984  <<- 13
    //00:00:00          <<- 14
    //00:00:01.7323722  <<- Delays occurs on the 15th line after the last dealy
    //00:00:00          <<- 1
    //00:00:00          <<- 2
    //00:00:00          <<- 3
    //00:00:00          <<- 4
    //00:00:00          <<- 5
    //00:00:00          <<- 6
    //00:00:00          <<- 7
    //00:00:00          <<- 8
    //00:00:00          <<- 9
    //00:00:00          <<- 10
    //00:00:00          <<- 11
    //00:00:00          <<- 12
    //00:00:00          <<- 13
    //00:00:00          <<- 14
    //00:00:00          <<- 15    
    //00:00:01.7014564  <<- Delays occurs on the 16th line after the last dealy
    //...

在上面的代码中，System.TimeoutException最终将在循环期间发生，为了解决此问题，我想消除延迟的发生