从一点到另一点显示特定数据的逻辑

Question

用于显示从一个时间戳到另一个时间戳的特定数据的逻辑。

预期产出：

12:00:00 - 13:00:00 -> should display 1 (In the log, timestamp 12:00:00 has data as "1", All lines from 12:00:00 until 13:00:00 should display 1. But has to change at 13:00:00, as timestamp 13:00:00 has new data which is "5")
13:00:00 - 14:00:00 -> should display 5 (13:00:00 line has data as 5)
14:00:00 - 15:00:00 -> should display 7 (14:00:00 line has data as 7)

日志样本：

{"data":"1","Timestamp":"12:00:00"}
{"sample1":"sample","x":"12:30:00"} 
{"sample1":"sample","x":"12:40:00"}
.....
{"data":"5","Timestamp":"13:00:00"}
{"sample1":"sample""x":"13:10:00"} 
.....
{"data":"7","Timestamp":"14:00:00"}
...

目前使用的代码：

eachTBData.TimeStamp >= this.x

当前输出：

 Correct data is not shown (Maps and displays in the previous set instead)
 12:00:00 - 13:00:00  -> this set displays 5 (has to display 1)
 13:00:00 - 14:00:00 -> this set displays 7 (has to display 5)

试过：

Thought using '<= this.x' instead of '>= this.x' as shown in below line, would solve the issue. 
But does not work and displays the initial data "1" for all sets:

    eachTBData.TimeStamp <= this.x

谢谢。

Answer 1

尝试使用正则表达式

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;

namespace ConsoleApplication52
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.txt";
        static void Main(string[] args)
        {
            StreamReader reader = new StreamReader(FILENAME);

            string line = "";
            string pattern = @"""(?'key1'[^""]+)"":""(?'data'\d+)"",""(?'key2'[^""]+)"":""(?'time'[^""]+)";
            string oldData = "";
            string time = "";
            string oldTime = "";
            while ((line = reader.ReadLine()) != null)
            {
                Match match = Regex.Match(line, pattern);
                if (match.Success)
                {
                    string key1 = match.Groups["key1"].Value;
                    time = match.Groups["time"].Value;
                    if (key1 == "data")
                    {
                        string data = match.Groups["data"].Value;
                        if (data != oldData)
                        {
                            if (oldData.Length != 0)
                            {
                                Console.WriteLine("{0} - {1} -> {2}", oldTime, time, oldData);
                            }
                            oldData = data;
                            oldTime = time;
                        }
                    }
                }
            }
            Console.WriteLine("{0} - {1} -> {2}", oldTime, time, oldData);
        }
    }
}