using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main(string[] args)

    {

        // Sample data

        List<Person> persons = new List<Person>

        {

            new Person { Id = 1, Name = "John", CityId = 1 },

            new Person { Id = 2, Name = "Jane", CityId = 2 },

            new Person { Id = 3, Name = "Bob", CityId = 1 },

            new Person { Id = 4, Name = "Alice", CityId = 3 }

        };

​

        List<City> cities = new List<City>

        {

            new City { Id = 1, Name = "New York" },

            new City { Id = 2, Name = "Los Angeles" },

            new City { Id = 3, Name = "Chicago" }

        };

​

        // Join query

        var query = from person in persons

                    join city in cities on person.CityId equals city.Id

                    select new { person.Name, city.Name };

​

        // Print results

        foreach (var result in query)

        {

            Console.WriteLine($"Person: {result.Name}, City: {result.Name}");

        }

    }

}

​

public class Person

{

    public int Id { get; set; }

    public string Name { get; set; }

    public int CityId { get; set; }

}

​

public class City

{

    public int Id { get; set; }

    public string Name { get; set; }

}