using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string str1 = "123=abc|131=xyz";

        string str2 = "131=xyz";

        string str3 = "";

        var a1 = str1.Split('|', '=').ToList();

        var a2 = str2.Split('|', '=').ToList();

        var a3 = str3.Split('|', '=').ToList();

        Console.WriteLine("1:" + a1.Count());

        Console.WriteLine("2:" + a2.Count());

        Console.WriteLine("3:" + a3.Count());

        //Console.WriteLine("4:" + a3[1]);

        Console.WriteLine("5:" + a3.IndexOf("131"));

        Console.WriteLine("6:" + a3[0]);

        var quoteRequestId1 = a1[a1.IndexOf("131") + 1];

        var quoteRequestId2 = a2[a2.IndexOf("131") + 1];

        var quoteRequestId3 = a3[a3.IndexOf("131") + 1];

        Console.WriteLine("1:" + quoteRequestId1);

        Console.WriteLine("2:" + quoteRequestId2);

        Console.WriteLine("3:" + quoteRequestId3);

    }

}