CreateInstance from Assembly in AppDomain

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string pathToDll = AppDomain.CurrentDomain.BaseDirectory + @"App.Core.dll"; //Full path to dll you want to load
            string typeName = "App.Core.Sockets.ServerSocket";

            string subDir = AppDomain.CurrentDomain.BaseDirectory;
            AppDomainSetup setup = new AppDomainSetup();
            setup.PrivateBinPath = subDir;
            setup.ApplicationBase = subDir;
            AppDomain newDomain = AppDomain.CreateDomain(subDir, null, setup);
            byte[] file = File.ReadAllBytes(pathToDll);//dll path is a dll inside subDir
            Assembly assembly = newDomain.Load(file);

            var obj = assembly.CreateInstance(typeName);
            obj.ToString();
        }
    }