Esempio n. 1
0
        public override void ProcessRequest()
        {
            int   assetId = GetIdFromFilename();
            Asset asset   = Asset.Get(assetId);

            string filename;

            if (asset.IsNull)
            {
                filename = "~/Images/Spacer.gif";
            }
            else if (!EntitySecurityManager.CanUserViewAssetThumbnail(SessionInfo.Current.User, asset))
            {
                filename = "~/Images/Spacer.gif";
            }
            else
            {
                // First check if we need to display a fixed thumbnail
                filename = GetFixedThumbnailUrl(asset);

                // No fixed thumbnail, so get real thumbnail
                if (filename == string.Empty)
                {
                    if (asset.IsProcessed)
                    {
                        // Asset is processed, so show either the thumbnail or unavailable image
                        AssetThumbnailInfo info = new AssetThumbnailInfo(asset);
                        filename = (info.FileExists) ? info.FilePath : "~/Images/Asset/Thumbnails/Unavailable.gif";
                    }
                    else
                    {
                        // Otherwise, asset is not processed, so show the processing image
                        filename = "~/Images/Asset/Thumbnails/Processing.gif";
                    }
                }
            }

            // Fix relative mappings
            if (filename.StartsWith("~/"))
            {
                filename = Context.Server.MapPath(filename);
            }

            // Send the image
            WriteFileToResponseStream(filename);
        }
        protected void DeleteThumbnail_Click(object sender, EventArgs e)
        {
            AssetThumbnailInfo info = new AssetThumbnailInfo(Asset);

            if (info.FileExists)
            {
                try
                {
                    File.Delete(info.FilePath);
                    AssetThumbnail1.Initialise(Asset);
                    FeedbackLabel1.SetSuccessMessage("Thumbnail deleted successfully");
                }
                catch (Exception ex)
                {
                    ExceptionHandler.HandleException(ex, "Error deleting thumbnail");
                    FeedbackLabel1.SetErrorMessage("Error deleting thumbnail: " + ex.Message);
                }
            }
            else
            {
                FeedbackLabel1.SetErrorMessage("Thumbnail file does not exist");
            }
        }