/// <summary>
/// Returns the last publish date in the given <see cref="T:Tridion.ContentManager.CommunicationManagement.Publication" /> and
/// given <see cref="T:Tridion.ContentManager.CommunicationManagement.PublicationTarget" />
/// </summary>
/// <param name="identifiableObject"><see cref="T:Tridion.ContentManager.ContentManagement.RepositoryLocalObject" /></param>
/// <param name="publication"><see cref="T:Tridion.ContentManager.CommunicationManagement.Publication" /></param>
/// <param name="publicationTarget"><see cref="T:Tridion.ContentManager.CommunicationManagement.PublicationTarget" /></param>
/// <returns>
/// Returns <see cref="T:System.DateTime" /> or DateTime.MinValue
/// </returns>
public static DateTime PublishedAt(this IdentifiableObject identifiableObject, Publication publication, PublicationTarget publicationTarget)
{
if (identifiableObject != null && publication != null && publicationTarget != null)
{
PublishInfo info = identifiableObject.PublishInfo(publication, publicationTarget).FirstOrDefault();
if (info != null)
{
return(info.PublishedAt);
}
}
return(default(DateTime));
}