Вызов методов из другого процесса

[SIZE=2][COLOR=#0000ff][FONT=Courier New]public [/FONT][/COLOR][/SIZE][FONT=Courier New][SIZE=2][COLOR=#0000ff]class[/COLOR][/SIZE][SIZE=2][COLOR=#008080]MyRefClass[/COLOR][/SIZE][SIZE=2] : [/SIZE][SIZE=2][COLOR=#008080]MarshalByRefObject[/COLOR][/SIZE][/FONT]
[SIZE=2][FONT=Courier New]{[/FONT][/SIZE]
[FONT=Courier New][SIZE=2][COLOR=#0000ff] public[/COLOR][/SIZE][SIZE=2] MyRefClass([/SIZE][SIZE=2][COLOR=#0000ff]string[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New] str)[/FONT][/SIZE]
[SIZE=2][FONT=Courier New] {[/FONT][/SIZE]
[SIZE=2][FONT=Courier New] }[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]}[/FONT][/SIZE]

[SIZE=2][COLOR=#008080][FONT=Courier New]AppDomain[/FONT][/COLOR][/SIZE][FONT=Courier New][SIZE=2] newDomain = [/SIZE][SIZE=2][COLOR=#008080]AppDomain[/COLOR][/SIZE][SIZE=2].CreateDomain([/SIZE][SIZE=2][COLOR=#800000]"NewDomain"[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New]);[/FONT][/SIZE]
[FONT=Courier New][SIZE=2][COLOR=#008080]Type[/COLOR][/SIZE][SIZE=2] t = [/SIZE][SIZE=2][COLOR=#0000ff]typeof[/COLOR][/SIZE][SIZE=2]([/SIZE][SIZE=2][COLOR=#008080]MyRefClass[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New]);[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]newDomain.CreateInstanceAndUnwrap(t.Assembly.FullName, t.FullName, [/FONT][/SIZE][FONT=Courier New][SIZE=2][COLOR=#0000ff]false[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New],[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]System.Reflection.[/FONT][/SIZE][FONT=Courier New][SIZE=2][COLOR=#008080]BindingFlags[/COLOR][/SIZE][SIZE=2].CreateInstance, [/SIZE][SIZE=2][COLOR=#0000ff]null[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New],[/FONT][/SIZE]
[FONT=Courier New][SIZE=2][COLOR=#0000ff]new [/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]object[/COLOR][/SIZE][SIZE=2][] { [/SIZE][SIZE=2][COLOR=#800000]"Hello, world!"[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New] },[/FONT][/SIZE]
[SIZE=2][FONT=Courier New]System.Globalization.[/FONT][/SIZE][FONT=Courier New][SIZE=2][COLOR=#008080]CultureInfo[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New].CurrentCulture,[/FONT][/SIZE]
[FONT=Courier New][SIZE=2][COLOR=#0000ff]null[/COLOR][/SIZE][/FONT][SIZE=2][FONT=Courier New],[/FONT][/SIZE]
[FONT=Courier New][SIZE=2][COLOR=#008080]AppDomain[/COLOR][/SIZE][SIZE=2].CurrentDomain.Evidence);[/SIZE][/FONT]

namespace PluginInterface
{

    public class S_PLUGIN_INIT:MarshalByRefObject
    {
        public string sPluginName;//out
    }
   
    public interface IPluginInterface
    {

        S_PLUGIN_INIT OnLoad(string sVersion);//on load module
        void OnUnLoad();//on unload module
        void OnShow(out Object ctrl);//on show form
        void OnHide();//on hide form

    }

    public class PluginInterfaceFactory : MarshalByRefObject
    {
        private const BindingFlags bfi = BindingFlags.Instance | BindingFlags.Public | BindingFlags.CreateInstance;

        public PluginInterfaceFactory() { }

 
        public IPluginInterface Create(string assemblyFile, string typeName, object[] constructArgs)
        {
            return (IPluginInterface)Activator.CreateInstanceFrom(
                assemblyFile, typeName, false, bfi, null, constructArgs,
                null, null, null).Unwrap();
        }

    }
}

namespace PluginClient
{
    public class PIPluginClass : MarshalByRefObject, IPluginInterface
    {

        #region IPIPlugin Members


        S_PLUGIN_INIT OnLoad(string sVersion)
        {
           
        }

        public void OnUnLoad()
        {
            throw new Exception("The method or operation is not implemented.");
        }

        public void OnShow(out System.Windows.Forms.Control ctrl)//on show form
        {
            Form frm = new Form1();
            frm.Visible = true;
            frm.TopLevel = false;
            ctrl = frm;
        }

        public void OnHide()
        {
           throw new Exception("The method or operation is not implemented.");
        }

        #endregion
    }
}

AppDomain ap = AppDomain.CreateDomain("1");
 //// create the factory class in the secondary app-domain
PluginInterfaceFactory factory = (PluginInterfaceFactory)ap.CreateInstance("PluginInteraface", "PluginInterface.PluginInterfaceFactory").Unwrap();

            // with the help of this factory, we can now create a real 'PluginInterface' instance

            object[] constructArgs = null;// new object[] { "" };
            PluginInterfaceFactory factory = (PluginInterfaceFactory)ap.CreateInstance("PluginInteraface", "PluginInterface.PluginInterfaceFactory").Unwrap();

            PluginInterfaceFactory  Plugs = factory.Create(@"Intreface.dll", "PIPlugin_Liabrary.PIPluginClass", constructArgs);
            IPluginInterface iPlugs = factory.Create(@"Client.dll", "PluginClient.PIPluginClass", constructArgs);

            S_PLUGIN_INIT sp=new S_PLUGIN_INIT();
            sp = g_stPlugInfo[0].iPlugs.OnLoad("1.0.0.0");
           

            Object ctr=null;
            iPlugs.OnShow(out ctr);

            Control ctrl = ctr as Control;
            if (ctrl != null)
            {
                ctrl.Visible = true;
                ((Form)ctrl).TopLevel=false;
                ctrl.Dock = System.Windows.Forms.DockStyle.Fill;
                splitMain.Panel2.Controls.Add(ctrl);//Вот здесь ошибка,типа не все поля доступны или имеются

            }