/// <summary>
        /// 完成压缩回调
        /// </summary>
        private void CompressedCallback(IAsyncResult state)
        {
            var args = state.AsyncState as CompressArgs;

            if (args == null)
            {
                return;
            }
            try
            {
                Compressed.EndInvoke(state);
                var endCompress = EndCompress;
                if (endCompress != null)
                {
                    //触发压缩完成事件
                    endCompress(this, args);
                }
            }
            catch (Exception ex)
            {
                //
                Console.WriteLine(ex.Message);
            }
        }