if (ball1 == usersball1 || ball2 == usersball1 || ball3 == usersball1 || ball4 == usersball1 || ball5 == usersball1 || ball6 == usersball1 || ball1 == usersball2 || ball2 == usersball2 || ball3 == usersball2 || ball4 == usersball2 || ball5 == usersball2 || ball6 == usersball2 || ball1 == usersball3 || ball2 == usersball3 || ball3 == usersball3 || ball4 == usersball3 || ball5 == usersball3 || ball6 == usersball3 || ball1 == usersball4 || ball2 == usersball4 || ball3 == usersball4 || ball4 == usersball4 || ball5 == usersball4 || ball6 == usersball4 || ball1 == usersball5 || ball2 == usersball5 || ball3 == usersball5 || ball4 == usersball5 || ball5 == usersball5 || ball6 == usersball5 || ball1 == usersball6 || ball2 == usersball6 || ball3 == usersball6 || ball4 == usersball6 || ball5 == usersball6 || ball6 == usersball6)
                {
 
                    lblResult.Visible = true;
                    lblResult.Text = lblResult.Text + "flag: " + System.Convert.ToString(flag) + lblOthers.Text + System.Convert.ToString(row2["UserName"]) + " matched at least 1 ball!<br />";
                }

public void StartCheck()
{
   /** Holds the lottery results, see the LotteryTicket class at the bottom **/
    LotteryTicket results = new LotteryTicket("The Lotto Results", 5, 12, 15, 9, 34, 23);
 
    /** Create a List of type LotteryTicket to hold each users results, you could populate this using a database **/
    List<LotteryTicket> listToCheck = new List<LotteryTicket>();
    listToCheck.Add(new LotteryTicket("Alan", 1, 2, 3, 4, 5, 6));
    listToCheck.Add(new LotteryTicket("John", 59, 58, 57, 56, 55, 54));
    listToCheck.Add(new LotteryTicket("Cheryl", 9, 4, 34, 1, 2, 23));
 
    /** Iterate through each ticket **/
    foreach(LotteryTicket ticket in listToCheck)
    {
        /** Counts the number of matches **/
        int numberOfMatches = 0;
        foreach (int number in ticket.Balls)
        {
            /** Compares the lottery results with the persons lottery ticket **/
            if (results.Balls.Contains(number))
            {
                /** If a match is found the number is incremented **/
                numberOfMatches++;
            }
        }
        /** Outputs a message to the console, you can change this to display your message to the web page **/
        Console.Out.WriteLine("{0} has matched {1} lottery numbers.", ticket.Name, numberOfMatches);
    }
}
 
/** Class to model a lottery ticket and the person who owns it **/
private class LotteryTicket
{
    /** The lottery tickets balls **/
    private int[] balls;
    /** The persons name **/
    private string name;
 
    /** Constructor, pass through the persons names and the balls selected **/
    public LotteryTicket(string name, int ball01, int ball02, int ball03, int ball04, int ball05, int ball06)
    {
        this.name = name;
        this.balls = new int[] {ball01, ball02, ball03, ball03, ball04, ball05, ball06};
    }
 
    /** Property to get the balls **/
    public int[] Balls
    {
        get { return this.balls; }
    }
 
    /** Property to get the name **/
    public string Name
    {
        get { return this.name; }
    }
}