将文件解析到列表中

我正在用C#将一个文件（php）解析为一个列表，这样我就可以用它做一些事情了。我以前在php中做过，但它的工作速度非常慢，所以我正在尝试用它制作一个C#winform应用程序。

这是我在C#中已经有的代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace g7_product_parser
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public void log(String msg)
        {
            textBox1.AppendText(msg + "'r'n'r'n");
        }
        public string[] parseLine(String regel)
        {
            string[] parsed;
            parsed = new string[2];
            regel = regel.Replace("array(", "");
            regel = regel.Replace("),", "");
            regel = regel.Replace(")", "");
            string[] temp = regel.Split(',');
            foreach (string part in temp)
            {
                string[] part2 = Regex.Split(part, "=>");
                // log(String.Join(",", part2));
                if (part2[0].Replace("'", "").Trim() == "keyword_uid")
                {
                    parsed[1] = part2[1].Replace("'", "").Trim();
                }
                else if (part2[0].Replace("'", "").Trim() == "product_uid")
                {
                    parsed[0] = part2[1].Replace("'", "").Trim();
                }
            }
            return parsed;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            String startTime = DateTime.Now.ToString("HH:mm:ss tt");
            log("Begin!");
            string[] lines = System.IO.File.ReadAllLines("tx_ttproductsv2_keywords_in_products.php");
            List<string> entrys = new List<string>();
            foreach (string line in lines)
            {
               // parseLine(line);
                log(String.Join(",",parseLine(line)));
                Application.DoEvents();
            }

            String endTime = DateTime.Now.ToString("HH:mm:ss tt");
            String totalTime = (DateTime.Parse(endTime) - DateTime.Parse(startTime)).ToString();
            log("Klaar!");
            log("Start Tijd: " + startTime + "'r'nEind Tijd: " + endTime + "'r'nTotale Tijd: " + totalTime);
        }

    }
}

要解析的文件如下所示：

array('uid' => '1','pid' => '2','keyword_uid' => '1','product_uid' => '1','amount' => '15','in_title' => '0'),
array('uid' => '2','pid' => '2','keyword_uid' => '2','product_uid' => '1','amount' => '12','in_title' => '0'),
array('uid' => '3','pid' => '2','keyword_uid' => '3','product_uid' => '1','amount' => '12','in_title' => '0'),
array('uid' => '4','pid' => '2','keyword_uid' => '4','product_uid' => '1','amount' => '9','in_title' => '0'),
array('uid' => '5','pid' => '2','keyword_uid' => '5','product_uid' => '1','amount' => '18','in_title' => '0'),
array('uid' => '6','pid' => '2','keyword_uid' => '6','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '7','pid' => '2','keyword_uid' => '7','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '8','pid' => '2','keyword_uid' => '8','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '9','pid' => '2','keyword_uid' => '9','product_uid' => '1','amount' => '79','in_title' => '1'),
array('uid' => '10','pid' => '2','keyword_uid' => '10','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '11','pid' => '2','keyword_uid' => '11','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '12','pid' => '2','keyword_uid' => '12','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '13','pid' => '2','keyword_uid' => '13','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '14','pid' => '2','keyword_uid' => '14','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '15','pid' => '2','keyword_uid' => '15','product_uid' => '1','amount' => '15','in_title' => '0'),
array('uid' => '16','pid' => '2','keyword_uid' => '16','product_uid' => '1','amount' => '12','in_title' => '0'),
array('uid' => '17','pid' => '2','keyword_uid' => '17','product_uid' => '1','amount' => '12','in_title' => '0'),
array('uid' => '18','pid' => '2','keyword_uid' => '18','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '19','pid' => '2','keyword_uid' => '19','product_uid' => '1','amount' => '15','in_title' => '1'),
array('uid' => '20','pid' => '2','keyword_uid' => '20','product_uid' => '1','amount' => '6','in_title' => '0'),
array('uid' => '21','pid' => '2','keyword_uid' => '21','product_uid' => '1','amount' => '15','in_title' => '0'),
array('uid' => '22','pid' => '2','keyword_uid' => '22','product_uid' => '1','amount' => '21','in_title' => '0'),
array('uid' => '23','pid' => '2','keyword_uid' => '23','product_uid' => '1','amount' => '12','in_title' => '0'),

我有一些PHP代码如下：

require_once 'export/tx_ttproductsv2_keywords_in_products_part.php';
$sql = new Sql;
    $tagList = array();
    $counter = 0;
    $counter2 = 0;
    $counter3 = 0;
    foreach ($tx_ttproductsv2_keywords_in_products as $key => $value) {
        $keywordsList = $sql -> getKeyWords($value['keyword_uid']);
        foreach ($keywordsList as $key2 => $value2) {
            if(isset($tagList[$value['product_uid']])){
                $tagList[$value['product_uid']] .= ", " . $value2['keyword'];
            }else{
                $tagList[$value['product_uid']] = $value2['keyword'];
            }
        }
    }

通过这种方式（在PHP中），我检查数组中的一个条目是否已经excist，如果是真的，则进行追加，或者创建一个新条目。

我的问题是：如何在C#中做到这一点。我想我必须使用一个列表，但我真的不知道具体如何使用。