public Guid Upload(string imageTitle, Stream imageStream, string imageFileName, string imageExtension, string albumTitle)
{
CultureInfo culture = CultureInfo.InvariantCulture;
LibrariesManager librariesManager = LibrariesManager.GetManager(LibrariesManager.GetDefaultProviderName());
Album album = librariesManager.GetAlbums().Where(i => i.Title.Equals(albumTitle)).SingleOrDefault();
Image image = librariesManager.CreateImage();
image.Parent = album;
image.Title[culture] = imageTitle;
image.DateCreated = DateTime.UtcNow;
image.LastModified = DateTime.UtcNow;
image.PublicationDate = DateTime.UtcNow;
image.UrlName[culture] = Regex.Replace(imageTitle.ToLower(), @"[^\w\-\!\$\'\(\)\=\@\d_]+", "-");
image.MediaFileUrlName[culture] = Regex.Replace(imageFileName.ToLower(), @"[^\w\-\!\$\'\(\)\=\@\d_]+", "-");
image.ApprovalWorkflowState.Value = "Published";
librariesManager.Upload(image, imageStream, imageExtension);
librariesManager.RecompileItemUrls(image);
librariesManager.Lifecycle.Publish(image, culture);
librariesManager.SaveChanges();
return(image.Id);
}