Generic List anonymous types in c# example

Anonymus Types:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Demos

{

    class clsAnonymasTypes

    {

        static void Main()

        {

            var person = new { name = "Venu gopal", age = 27 };

            /* // Basic creation of Anonymus type

           

            Console.WriteLine("{0},{1}",person.name,person.age);

            Console.ReadLine();

           */

           // step 2

            //Instantiate the Employee list

            // List<Employee> empList = new List<Employee>();

            List<Employee> empList = new List<Employee> { new Employee { EmpNo = 1013, EmpName = "Umakar", Dept = "Student", Salary = 15000 },

                                                          new Employee { EmpNo = 1010, EmpName = "Venu", Dept = "HR", Salary = 12000 } };

            empList.Add(new Employee { EmpNo = 1010, EmpName = "Venu", Dept = "SWE", Salary = 12000 });

            empList.Add(new Employee { EmpNo = 1011, EmpName = "srinu", Dept = "CISF", Salary = 13000 });

            empList.Add(new Employee { EmpNo = 1012, EmpName = "Shekar", Dept = "BSF", Salary = 14000 });

            //step 3

            //Var can store all type of data

            //In Case 1:  it wil store the object(Containing all type "int,string,float" etc)

            //In Case 2: it will stoire the data of type "string" Only

            //In Case 3: It will filter and store only two columns of type "string" and "Int"

            var emps = from e in empList

                       //case 1: we can select all column by writing" select e"

                       // case 2: if we want to select only Name from list, we write as  "select e.EmpName"

                       // case 3: if We want to  slect a specified columns from the list, we write as "select new{ column1,column 2}"

                       //we can chage the column naes also as per requirement

                       select new { EmployeeName = e.EmpName, EmployeeSalary = e.Salary }

                          ;

          //Using Lamda Expression

            var emp1 = empList.Select(e => new { e.EmpName, e.Salary });

           //To get  a sum  of salaries

            var sum = empList.Sum(e => e.Salary);

            //Step 4

            foreach (var data in emps)

            {

                Console.WriteLine("{0},{1}", data.EmployeeName, data.EmployeeSalary);

            }

            Console.ReadLine();

        }

    }

    class Employee

    {

        //Step 1(a)

        public int EmpNo { get; set; }

        public string EmpName { get; set; }

        public string Dept { get; set; }

        public int Salary { get; set; }

        //Step 1(b)

        //Wew can OverRide the Default methods as per requirement

        public override string ToString()

        {

            return string.Format("{0},{1},{2},{3}", EmpNo, EmpName, Dept, Salary);

        }

    }

}