using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        // Student collection

        IList<Student> studentList = new List<Student>() { 

                new Student() { StudentID = 1, StudentName = "John", Age = 18, StandardID = 1 } ,

                new Student() { StudentID = 2, StudentName = "Steve",  Age = 21, StandardID = 1 } ,

                new Student() { StudentID = 3, StudentName = "Bill",  Age = 18, StandardID = 2 } ,

                new Student() { StudentID = 4, StudentName = "Ram" , Age = 20, StandardID = 2 } ,

                new Student() { StudentID = 5, StudentName = "Ron" , Age = 21 } 

            };

        IList<Standard> standardList = new List<Standard>() { 

                new Standard(){ StandardID = 1, StandardName="Standard 1"},

                new Standard(){ StandardID = 2, StandardName="Standard 2"},

                new Standard(){ StandardID = 3, StandardName="Standard 3"}

            };

        var innerJoinResult = studentList.Join(// outer sequence 

                      standardList,  // inner sequence 

                      student => student.StandardID,    // outerKeySelector

                      standard => standard.StandardID,  // innerKeySelector

                      (student, standard) => new  // result selector

                                    {

                                        StudentName = student.StudentName,

                                        StandardName = standard.StandardName

                                    });

​

        foreach (var obj in innerJoinResult)

        {

            Console.WriteLine("{0} - {1}", obj.StudentName, obj.StandardName);

        }

    }

}

​

public class Student{

​

    public int StudentID { get; set; }

    public string StudentName { get; set; }

    public int Age { get; set; }

    public int StandardID { get; set; }

}

​

public class Standard{

​

    public int StandardID { get; set; }

    public string StandardName { get; set; }

}