RemotingHelper 构建远程对象

 public class RemotingHelper
    {
        private static bool _isInit;
        private static IDictionary _wellKnownTypes;
        public static object GetObject(Type type) 
        {
            if (!_isInit) InitTypeCache();
            WellKnownClientTypeEntry item = (WellKnownClientTypeEntry)_wellKnownTypes[type];

            if (item == null)
            {
                throw new RemotingException("Type not found !");
            }
            //为指定类型和 URL 所指示的已知对象创建一个代理。
            return Activator.GetObject(item.ObjectType, item.ObjectUrl);
        }
        public static void InitTypeCache()
        {
            _isInit = true;
            _wellKnownTypes = new Hashtable();
            foreach (WellKnownClientTypeEntry item in RemotingConfiguration.GetRegisteredWellKnownClientTypes())
            {
                if (item.ObjectType == null) 
                {
                    throw new RemotingException("A configured type could not be found. Please check spelling");
                }
                _wellKnownTypes.Add(item.ObjectType, item);
            }

        }
    }

Type t = Assembly.LoadFrom(sDllName).GetType(sObjName);
//  使用指定类型的默认构造函数来创建该类型的实例
 Activator.CreateInstance(t);