using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApp6{    class Program    {        static string greetings = "PONG!";        static void Main(string[] args)        {            AppDomain otherDomain = AppDomain.CreateDomain("otherDomain");            greetings = "PING!";            MyCallBack();            otherDomain.DoCallBack(new CrossAppDomainDelegate(MyCallBack));            // Output:            // PING! from defaultDomain            // PONG! from otherDomain            Console.In.ReadLine();        }        public static void MyCallBack()        {            string name = AppDomain.CurrentDomain.FriendlyName;            if (name == AppDomain.CurrentDomain.SetupInformation.ApplicationName)            {                name = "defaultDomain";            }            Console.WriteLine(greetings + " from " + name);            var list = AppDomain.CurrentDomain.GetAssemblies().ToList();        }    }}

result:

PING! from defaultDomainPONG! from otherDomain