public void GetChargStationFileCount(HttpContext context)        {            var chargstationfilebll = new ChargStationFileBll();            var cPictureMessage = new Message
     
      ();            var fileid = context.Request.Params["id"];            string ret = null;            if (string.IsNullOrEmpty(fileid))            {                cPictureMessage.Total = 0;                return;            }            var chargstationfile = new ChargStationFile                {                    ZhanBh = int.Parse(fileid)                };            try            {                var dt = chargstationfilebll.FindBy(chargstationfile);                var list = ConvertHelper
      
       .ConvertToList(dt);                foreach (var li in list)                {                    var bytes = li.FileContext;                    if (bytes == null) continue;                    var stream = new MemoryStream(bytes);                    var img = Image.FromStream(stream);                    string path = AppDomain.CurrentDomain.BaseDirectory;//获取文件的相对路径                    string filePath = path + @"Scripts\pictureChargStation\SaveChargeStationFile\";                    img.Save(filePath + li.Id + "." + li.FileMime);                    var w = img.Width;                    var h = img.Height;                    li.Width = w;                    li.Height = h;                    li.FileContext = null;                }                cPictureMessage.Rows = list;                ret = Jss.Serialize(cPictureMessage);            }            catch (Exception e)            {                Log.Error(e);                throw;            }            context.Response.Write(ret);