gistfile1.cs

    public class Episode
    {
        [PrimaryKey, AutoIncrement]
        public int Id { get; set; }
        [Indexed]
        public int SubscriptionId { get; set; }
        public string Title { get; set; }
        public string Description { get; set; }
        public string Content { get; set; }
        public string Guid { get; set; }
        public DateTime PublishedDate { get; set; }
        public double Length { get; set; }
        public Boolean Explicit { get; set; }
        public double CurrentPosition { get; set; }
        public string UriServer { get; set; }
        public string UriLocal { get; set; }
        public string StatusPlay { get; set; }
        public string StatusFile { get; set; }
        public DateTime FinishedOn { get; set; }
    }

    public class Download
    {
        [PrimaryKey, AutoIncrement]
        public int Id { get; set; }
        [Indexed]
        public int EpisodeId { get; set; }
        
        private Episode _episode = null;
        [Ignore]
        public Episode Episode {
            get {
                return _episode ?? (_episode = App.db.GetAsync<Episode>(EpisodeId).Result);
            }
            
            set {
                if(value.Id != EpisodeId)
                    EpisodeId = value.Id
                
                _episode = value;
            }
        }
    }