using System.Collections.Concurrent;

using System.Threading;

​

namespace Samples.Console

{

    public class Program

    {

        public static void Main(string[] args)

        {

            Thread thread1 = new Thread(() => StaticField.StaticFieldTest());

            Thread thread2 = new Thread(() => StaticField.StaticFieldTest());

​

            thread1.Start();

            thread2.Start();

​

            Thread.Sleep(1000);

        }

​

        public class StaticField

        {

            public static readonly ConcurrentDictionary<string, string> _dic = InitDictionary();

​

            public static void StaticFieldTest()

            {

                System.Console.WriteLine("Start Running...");

​

                _dic.TryAdd(string.Empty, string.Empty);

                _dic.TryAdd(string.Empty, string.Empty);

                _dic.TryAdd(string.Empty, string.Empty);

            }

​

            public static ConcurrentDictionary<string, string> InitDictionary()

            {

                System.Console.WriteLine("The Dictionary has been initialized now");

                Thread.Sleep(500);

                return new ConcurrentDictionary<string, string>();

            }

        }

    }

}