using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Collections;  

public class Program

{

    static void ReportTypeProperties<T>(T obj)

    {

        Console.WriteLine("Compile-time type: {0}", typeof(T).Name);

        Console.WriteLine("Actual type: {0}", obj.GetType().Name);

    }

    class Student

    {

        public int StudentID { get; set; }

        public String StudentName { get; set; }

        public int Age { get; set; }

    }

    public static void Main()

    {

        Student[] studentArray = 

        { 

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

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

            new Student() { StudentID = 3, StudentName = "Bill", Age = 25 },

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

            new Student() { StudentID = 5, StudentName = "Ron", Age = 31 }

        };   

        ReportTypeProperties(studentArray);

        ReportTypeProperties(studentArray.AsEnumerable());

    }

}