Sunday 8 July 2018

Introduction to Linq query in C#



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            List<student> li = new List<student>()

          {



            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 },

            new student() { studentID = 6, studentName = "Chris",  Age = 17 },

            new student() { studentID = 7, studentName = "Rob",Age = 19  },

        };





            List<student> teenagerlist = li.Where(x => x.Age > 12 && x.Age < 20).ToList();

            Console.WriteLine("Teenager students: ");

            foreach (student item in teenagerlist)

            {

                Console.WriteLine("Name: "+item.studentName);

            }





        }

    }

}

----------------------------------------------------------------------------------------------------------------
class student
    {
        public int studentID { get; set; }
        public string studentName { get; set; }
        public int Age { get; set; }
    }

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