private void PosterCacheAdd(string fullFilePath, Image image)
 {
     try
     {
         lock (posterCacheLock)
         {
             FileEntryImage fileEntryImage = new FileEntryImage(fullFilePath, FileHandler.GetLastWriteTime(fullFilePath), new Bitmap(image));
             //new new Bitmap to make it thraadsafe https://stackoverflow.com/questions/49679693/c-sharp-crashes-with-parameter-is-not-valid-when-setting-picturebox-image-to
             posterCache.Add(fileEntryImage); //Add last
             if (posterCache.Count > 10)
             {
                 posterCache.RemoveAt(0);                         //Only remember last x images
             }
         }
     }
     catch (Exception ex)
     {
         Logger.Error(ex, "PosterCacheAdd");
     }
 }
        private Image PosterCacheRead(string fullFileName)
        {
            Image image = null;

            try
            {
                int       indexFound = -1;
                FileEntry fileEntry  = new FileEntry(fullFileName, FileHandler.GetLastWriteTime(fullFileName, waitAndRetry: false));

                lock (posterCacheLock)
                {
                    for (int index = 0; index < posterCache.Count; index++)
                    {
                        if (posterCache[index] == fileEntry)
                        {
                            indexFound = index;
                            break;
                        }
                    }

                    if (indexFound > -1)
                    {
                        //new new Bitmap to make it thraadsafe https://stackoverflow.com/questions/49679693/c-sharp-crashes-with-parameter-is-not-valid-when-setting-picturebox-image-to
                        FileEntryImage fileEntryImage = new FileEntryImage(posterCache[indexFound].FileEntry, posterCache[indexFound].Image);
                        posterCache.Add(fileEntryImage); //Add last
                        posterCache.RemoveAt(indexFound);
                        image = new Bitmap(posterCache[posterCache.Count - 1].Image);
                    }
                }
            }
            catch (Exception ex)
            {
                Logger.Error(ex, "PosterCacheRead");
            }
            return(image);
        }