using System;

using System.Collections.Generic;

using System.Linq;

​

​

public class DepartmentClass

{

    public int DepartmentId { get; set; }

    public string Name { get; set; }

}

​

public class EmployeeClass

{

    public int EmployeeId { get; set; }

    public string EmployeeName { get; set; }

    public int DepartmentId { get; set; }

}

​

public class Program

{

    public static void Main()

    {

        List<DepartmentClass> departments = new List<DepartmentClass>();

        departments.Add(new DepartmentClass { DepartmentId = 1, Name = "Account" });

        departments.Add(new DepartmentClass { DepartmentId = 2, Name = "Sales" });

        departments.Add(new DepartmentClass { DepartmentId = 3, Name = "Marketing" });

        List <EmployeeClass> employees = new List <EmployeeClass>();

        employees.Add(new EmployeeClass { DepartmentId = 1, EmployeeId = 1,EmployeeName = "William" });

        employees.Add(new EmployeeClass { DepartmentId = 2, EmployeeId = 2, EmployeeName = "Miley" });

        employees.Add(new EmployeeClass { DepartmentId = 1, EmployeeId = 3, EmployeeName = "Benjamin" });

        var list = (from e in employees join d in departments 

                    on e.DepartmentId equals d.DepartmentId

                    select new {

                        EmployeeName = e.EmployeeName,

                        DepartmentName = d.Name,

                    });

​

        foreach(var e in list)

        {

            Console.WriteLine("Employee Name = {0} || Department Name = {1}", 

                              e.EmployeeName, e.DepartmentName);

        }                     

​

    }

}