C# Console Menu + Submenu's Help

I have just had a play around and came up with the following:-

Code:

public void deleteUser()
        {
            List<Data> result = search();

            foreach (Data i in result)
            {
                Console.WriteLine("\n{0,0} {1,5}", i.userID, i.userName);
	        }
            Console.WriteLine("\nPlease select member to delete by entering in userid");
            int x = int.Parse(Console.ReadLine());

            foreach (Data a in result)
            {
                if (a.userID == x)
                {
                    Users.Remove(a);
                }
            }
        }

        public List<Data> search()
        {
            Console.Write("Please Enter Your Username of Member: ");
            string userToFind = Console.ReadLine();
            List<Data> results = Users.FindAll(
            delegate(Data bk)
            {
                return bk.userName.Contains(userToFind);
            });

            return results;
        }

I will have a look into Linq and have another play around. But are there any other recommendations to clean up the code???

EDIT -

Here is how I am structuring my List

Code:

class Data
    {
        public int    userID         { get; set; }
        public string userName       { get; set; }
        public string userAddress    { get; set; }
        public string userEmail      { get; set; }
        public string userPhone      { get; set; }
    }

Code:

public void fillList()
        {
            addUser("Bruce Caldwell",  "123 Washington Drive", "0412345678", "caldwell@gmail.com");
            addUser("Justin Halpern",  "13 Ashmore Road",      "0755894712", "jhalpern@gmail.com");
            addUser("Stephenie Meyer", "3 Benowa Street",      "0398784541", "step@yahoo.com");
            addUser("Bruce Yoddaly", "1 Bayswater Ave",        "0755874961", "Yoddaly@gmail.com");
            addUser("Maxine Paetro",   "55 Broadbeach Ave",    "0458965214", "max@gmail.com");
            addUser("Bruce Centre", "2985 Pacific Drive",      "0145198745", "Centre@gmail.com");
            addUser("Suzanne Collinsi","362 Australia Drive",  "0287547562", "suzanne12@bond.com");
        }

EDIT #2 - Just in case anyone is wondering the above data is all fake LOL