Question

i have a Class like

public class user
{
    public int ID { get; set; }
    public int money { get; set; }

}

and Data Like

 List<user> users = new List<user>();

        user u1 = new user();
        u1.ID = 1;
        u1.money = 20;
        users.Add(u1);



        user u2 = new user();
        u2.ID = 1;
        u2.money = 30;
        users.Add(u2);



        user u3 = new user();
        u3.ID = 2;
        u3.money = 100;
        users.Add(u3);




        user u4 = new user();
        u4.ID = 2;
        u4.money = 200;
        users.Add(u4);


        user u5 = new user();
        u5.ID = 3;
        u5.money = 500;
        users.Add(u5);

Now i want a list of users which should contains 3 users based on Unique ID and and their Money should be the average according to repetition .

Any hint would be great in right direction.

Thanks

Answer 1

Use Linq will be easy, please try:

            var q = from u in users
                group u by u.ID into g
                select new user { ID = g.Key, money = (int)g.Average(u => u.money) };

        foreach (user u in q)
        {
            Console.WriteLine("{0}={1}", u.ID, u.money);
        }