using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        List<int> numbers = new List<int>() { 1, 2, 3 };  // collection initializer

​

        // create company objects to populate List... object initializer (instantiate and set properties)

        Company company1 = new Company() { Symbol = "AAPL", Name = "Apple", LastPrice = 488.45 };

        Company company2 = new Company() { Symbol = "GOOG", Name = "Google", LastPrice = 850.25 };

​

        // the List<T> class is a generic class and can store any data type (company objects in this case -- complex type)

        List<Company> CompanyList = new List<Company>();

        CompanyList.Add(company1);

​

        // easy way to add multiple company objects to a list

        List<Company> CompanyList2 = new List<Company>() { company1, company2 };

​

        // add one more company object to list (with its properties)

        CompanyList2.Add(

            new Company() { Name = "MSFT", Symbol = "Microsoft", LastPrice = 500 }

        );

​

        Console.WriteLine(CompanyList2[0].Symbol);  // reference the first company object in the list

​

        // loop through the list of companies and get some data from each company object

        foreach (Company co in CompanyList2)

        {

            Console.WriteLine(co.Name);

        }

​

        // instead of creating the objects and then adding to the list, can add each new object directly into the list

        List<Company> CompanyList3 = new List<Company>() {

            new Company() { Name = "Intel" }, 

            new Company() { Name = "Zynga" }

        };

​

        // find a company object in a list via linq/lambda -- see more info about checking for null in 'linq - examples' fiddle

        Company findCo = CompanyList3.FirstOrDefault(x => x.Name == "Intel");

        if (findCo != null)

        {

            Console.WriteLine(findCo.Name);

        }

    }

}

​

public class Company

{

    public string Symbol { get; set; }

    public string Name { get; set; }

    public double LastPrice { get; set; }

}