/// <summary>
        /// 判断指定对象实例是否存在该属性
        /// </summary>
        public static bool HasProperty(object target, string propertyName)
        {
            if (target == null || propertyName == null)
            {
                return(false);
            }

            string[] names = PickPropertyNames(propertyName);
            int      len   = names.Length;
            object   child = target;

            for (int i = 0; i < (len - 1); i++)
            {
                IDynaAccessProxy proxy  = GetObjectProxy(child);
                object           parent = child;
                child = proxy.GetProperty(parent, names[i]);
                if (child == null)
                {
                    try
                    {
                        child = Activator.CreateInstance(proxy.GetPropertyType(parent, names[i]));
                    }
                    catch (Exception)
                    {
                        return(false);
                    }
                }
            }
            IDynaAccessProxy endProxy = GetObjectProxy(child);

            return(endProxy.HasProperty(child, names[len - 1]));
        }
        /// <summary>
        /// 设置指定对象实例的属性值
        /// </summary>
        public static void  SetProperty(System.Object target, System.String propertyName, System.Object propertyValue)
        {
            if (target == null)
            {
                throw new System.ArgumentException("No target specified");
            }
            if (propertyName == null)
            {
                throw new System.ArgumentException("No name specified");
            }

            string[] names = PickPropertyNames(propertyName);
            int      len   = names.Length;
            object   child = target;

            for (int i = 0; i < (len - 1); i++)
            {
                IDynaAccessProxy proxy  = GetObjectProxy(child);
                object           parent = child;
                child = proxy.GetProperty(parent, names[i]);
                if (child == null)
                {
                    try
                    {
                        child = Activator.CreateInstance(proxy.GetPropertyType(parent, names[i]));
                        proxy.SetProperty(parent, names[i], child);
                    }
                    catch (Exception e)
                    {
                        throw new DynaAccessException(e);
                    }
                }
            }
            IDynaAccessProxy setProxy = GetObjectProxy(child);

            setProxy.SetProperty(child, names[len - 1], propertyValue);
        }