private void SetThumbnails()
 {
     tasksDispatcher = new TasksDispatcher(GenerateThumbnail, SetThumbnailImage, imageFiles.Count);
     tasksDispatcher.Start();
 }
 private void SetThumbnails()
 {
     tasksDispatcher = new TasksDispatcher(GenerateThumbnail, SetThumbnailImage, imageFiles.Count);
     tasksDispatcher.Start();
 }