using System;

​

public class Program {

  public static void Main(string[] args) {

    var string1="\"1\",\"Truck\",\"FN60HZU\",\"'WC\",,\"26/03/2022\",\"H2\",\"NEARSIDE OUTER\",\"1\",\"31580225\",\"TRIANGLE\",\"TRS02\",\"14\",\"14\",\"14\",,\"17,18,19\",\"5TST001\",\"16:01:00\",\"16:07:16\",\"40:D3:AE:CB:16:EE\"";

​

    var columns = string1.Replace("\",\"", "|").Replace(",,", "||").Replace("\"","").Split('|');

​

    foreach(var col in columns)

    {

       Console.WriteLine(col);

    }

  }

}