/// <summary>
        /// 显示盈亏结构图
        /// </summary>
        /// <returns></returns>
        public async Task <FileResult> ShowSFPic(string id)
        {
            try
            {
                if (!string.IsNullOrEmpty(id))
                {
                    Guid gid = new Guid(id);
                    Entities.Brochure find = await BrochureRepository.FindAsync(b => b.BrochureID == gid);

                    byte[] image = find.SFPic;
                    return(new FileContentResult(image, "image/jpeg"));
                }
                return(null);
            }
            catch (Exception)
            {
                return(null);
            }
        }