using System;

using System.Linq;

using System.Collections.Generic;

​

public class data

{

    public string id

    {

        get;

        set;

    }

​

    public string name

    {

        get;

        set;

    }

}

​

public class Program

{

    public static void Main()

    {

        IList<data> stringList = new List<data>()

        {new data{id= "1", name = "C#"}, new data{id = "2", name = "Java"}};

        var result = stringList.Where(s => s.id == "1").FirstOrDefault();

        if (result?.id == "1")

            Console.WriteLine("Works!");

    }

}