C#如何创建日期和时间范围？

但是,该程序似乎没有识别所选择的各种日期时间范围.程序应检索用户选择的日期和时间之间的记录.

问题可能是由于代码的排序？

有人可以告知代码吗？谢谢！

代码：

String timeDate2 = result1.ToString("MM/dd/yyyy HH:mm:ss");

            Console.WriteLine("The last written time to the registry was : " + timeDate2);

            TimeSpan.TryParse("12/02/2010 16:04:17",out t1);
            TimeSpan.TryParse("12/09/2010 05:12:42",out t2);
            TimeSpan.TryParse(timeDate2,out t3);

            if ((t3 >= t1 && t3 <= t2) == true)    // Is t3 between t1 and t2?
            {
                foreach (String k in lines.Skip(12))
                {
                    Console.WriteLine(k);
                }
             x = 1;
            }

            else
            {
                x = 2;
            }

            Console.WriteLine("============================================================");

        }

        if (x == 2)
        {
            Console.WriteLine("There is no selected days within the log files!");
        }