using System;

​

public class Program

{

    public static void Main()

    {

        string senderId = "FOO";

        string targetId = "BAA";

        string excludePendingMessages = "";

        if (!string.IsNullOrEmpty(excludePendingMessages))

        {

            foreach (string excludeConnection in excludePendingMessages.Split(';'))

            {

                Console.WriteLine("Checking " + excludeConnection);

                string[] correspondents = excludeConnection.Split('|');

                Console.WriteLine("0" + correspondents[0]);

                Console.WriteLine("1" + correspondents[1]);

                if ((correspondents[0] != null && correspondents[0] == senderId) && (correspondents[1] != null && correspondents[1] == targetId))

                {

                    Console.WriteLine("stopping");

                    //Dont send this message for this combination

                    return;

                }

                else

                {

                    Console.WriteLine("Continuing");

                }

            }

        }

    }

}