private void DeliverFile(HttpContext context)
        {
            DNNGo_DNNGalleryPro_Files DataItem = DNNGo_DNNGalleryPro_Files.FindByKeyForEdit(WebHelper.GetStringParam(context.Request, "PhotoID", "0"));

            if (DataItem != null && DataItem.ID > 0)
            {
                String Picture = GetPhotoPath(DataItem);

                if (!String.IsNullOrEmpty(Picture) && File.Exists(context.Server.MapPath(Picture)))
                {
                    context.Response.AddHeader("Content-Disposition", "attachment; filename=\"" + DataItem.FileName + "\"");
                    context.Response.ContentType = "application/octet-stream";
                    context.Response.ClearContent();
                    context.Response.WriteFile(context.Server.MapPath(Picture));
                }
                else
                {
                    context.Response.StatusCode = 404;
                }
            }
            else
            {
                context.Response.StatusCode = 404;
            }



            //var filename = context.Request["PhotoID"];
            //var filePath = StorageRoot + filename;

            //if (File.Exists(filePath)) {
            //    context.Response.AddHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
            //    context.Response.ContentType = "application/octet-stream";
            //    context.Response.ClearContent();
            //    context.Response.WriteFile(filePath);
            //} else
            //    context.Response.StatusCode = 404;
        }
        // Upload entire file
        private void UploadWholeFile(HttpContext context, List <Resource_FilesStatus> statuses)
        {
            for (int i = 0; i < context.Request.Files.Count; i++)
            {
                var file = context.Request.Files[i];

                if (file != null && !String.IsNullOrEmpty(file.FileName) && file.ContentLength > 0)
                {
                    //验证后缀名是否符合
                    bool Valid = FileSystemUtils.CheckValidFileName(file.FileName);
                    if (Valid)
                    {
                        DNNGo_DNNGalleryPro_Files PhotoItem = new DNNGo_DNNGalleryPro_Files();

                        PhotoItem.ModuleId = WebHelper.GetIntParam(context.Request, "ModuleId", 0);
                        PhotoItem.PortalId = WebHelper.GetIntParam(context.Request, "PortalId", 0);


                        PhotoItem.FileName = file.FileName;
                        PhotoItem.FileSize = file.ContentLength / 1024;
                        PhotoItem.FileMate = WebHelper.leftx(FileSystemUtils.GetContentType(Path.GetExtension(PhotoItem.FileName).Replace(".", "")), 30);

                        PhotoItem.FileExtension = System.IO.Path.GetExtension(PhotoItem.FileName).Replace(".", "");
                        PhotoItem.Name          = System.IO.Path.GetFileName(file.FileName).Replace(Path.GetExtension(PhotoItem.FileName), "");
                        PhotoItem.Status        = (Int32)EnumFileStatus.Approved;

                        try
                        {
                            if (("png,gif,jpg,jpeg,bmp").IndexOf(PhotoItem.FileExtension) >= 0)
                            {
                                //图片的流
                                Image image = Image.FromStream(file.InputStream);
                                PhotoItem.ImageWidth  = image.Width;
                                PhotoItem.ImageHeight = image.Height;

                                PhotoItem.Exif = Common.Serialize <EXIFMetaData.Metadata>(new EXIFMetaData().GetEXIFMetaData(image));
                            }
                        }
                        catch
                        {
                        }

                        PhotoItem.LastTime = xUserTime.UtcTime();
                        PhotoItem.LastIP   = WebHelper.UserHost;
                        PhotoItem.LastUser = UserInfo.UserID;


                        //将文件存储的路径整理好
                        String fileName = FileSystemUtils.HandleFileName(System.IO.Path.GetFileName(file.FileName).Replace("." + PhotoItem.FileExtension, ""));  //文件名称
                        String WebPath  = String.Format("DNNGalleryPro/uploads/{0}/{1}/{2}/", PhotoItem.LastTime.Year, PhotoItem.LastTime.Month, PhotoItem.LastTime.Day);
                        //检测文件存储路径是否有相关的文件
                        System.IO.FileInfo fInfo = new System.IO.FileInfo(HttpContext.Current.Server.MapPath(String.Format("{0}{1}{2}.{3}", PortalSettings.HomeDirectory, WebPath, fileName, PhotoItem.FileExtension)));

                        //检测文件夹是否存在
                        if (!System.IO.Directory.Exists(fInfo.Directory.FullName))
                        {
                            System.IO.Directory.CreateDirectory(fInfo.Directory.FullName);
                        }
                        else
                        {
                            Int32 j = 1;
                            while (fInfo.Exists)
                            {
                                //文件已经存在了
                                fileName = String.Format("{0}_{1}", FileSystemUtils.HandleFileName(PhotoItem.Name), j);
                                fInfo    = new System.IO.FileInfo(HttpContext.Current.Server.MapPath(String.Format("{0}{1}{2}.{3}", PortalSettings.HomeDirectory, WebPath, fileName, PhotoItem.FileExtension)));
                                j++;
                            }
                        }

                        PhotoItem.FilePath = String.Format("{0}{1}.{2}", WebPath, fileName, PhotoItem.FileExtension);
                        PhotoItem.FileName = String.Format("{0}.{1}", fileName, PhotoItem.FileExtension);
                        try
                        {
                            if (!fInfo.Directory.Exists)
                            {
                                fInfo.Directory.Create();

                                // FileSystemUtils.AddFolder(PortalSettings, String.Format("{0}DNNGo_PhotoAlbums/{0}/{1}/"), String.Format("{0}DNNGo_PhotoAlbums/{0}/{1}/"), (int)DotNetNuke.Services.FileSystem.FolderController.StorageLocationTypes.InsecureFileSystem);
                            }

                            //构造指定存储路径
                            //file.SaveAs(fInfo.FullName);
                            ChangeImageSize(file, fInfo.FullName);
                            //FileSystemUtils.AddFile(PhotoItem.FileName, PhotoItem.PortalId, String.Format("DNNGo_PhotoAlbums\\{0}\\{1}\\", PhotoItem.ModuleId, PhotoItem.AlbumID), PortalSettings.HomeDirectoryMapPath, PhotoItem.FileMeta);
                        }
                        catch (Exception ex)
                        {
                        }

                        //给上传的相片设置初始的顺序
                        QueryParam qp = new QueryParam();
                        qp.ReturnFields = qp.Orderfld = DNNGo_DNNGalleryPro_Files._.Sort;
                        qp.OrderType    = 1;
                        qp.Where.Add(new SearchParam(DNNGo_DNNGalleryPro_Files._.PortalId, PhotoItem.PortalId, SearchType.Equal));
                        PhotoItem.Sort = Convert.ToInt32(DNNGo_DNNGalleryPro_Files.FindScalar(qp)) + 2;
                        Int32 PhotoId = PhotoItem.Insert();



                        statuses.Add(new Resource_FilesStatus(PhotoItem, PortalSettings, ModulePath));
                    }
                    else
                    {
                        throw new HttpRequestValidationException("Following file was imported/uploaded, but is not an authorized filetype: " + file.FileName);
                    }
                }
            }
        }