public bool MarkUserNotificationAsSeen(string userId, int notificationId)
{
bool result = false;
if (!string.IsNullOrEmpty(userId) && notificationId > 0)
{
UserNotification userNotification = _context.UserNotifications.DefaultIfEmpty(null).SingleOrDefault(un => un.UserId == userId && un.NotificationId == notificationId);
if (userNotification != null)
{
userNotification.MarkAsSeen();
result = true;
}
}
return(result);
}