using System;

using System.Linq;

​

public static class Program

{

    public static void Main(string[] args)

    {

        var empCollection = new[]

        {

            new Employee

            {

                Name = "Test1",

                Salry = "1000",

                Notes = new[] {"A", "B", "C", "D"}

            },

            new Employee

            {

                Name = "Test2",

                Salry = "2000",

                Notes = new[] {"E", "F", "G", "H"}

            }

        };

​

        var data = empCollection

            .SelectMany(e => e.Notes, (e, n) => new {name = e.Name, note = n});

​

        foreach (var item in data)

        {

            Console.WriteLine($"Name {item.name}, Note {item.note}");

        }

    }

}

​

public class Employee

{

    public string Name { get; set; }

    public string Salry { get; set; }

    public string[] Notes { get; set; }

}