Десереализация файла

        public static void NewServerDb(string CatalogDb)
        {
            FileStream Fs = new FileStream(CatalogDb + "\\DBList.db", FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
            BinaryFormatter Bf = new BinaryFormatter();
            Bf.Serialize(Fs, new SortedList<uint, cSettings>());
            Fs.Close();
        }    
 
        private static void CreateEqualIdToPath(cSettings Settings, string CatalogDb)
        {
            FileStream Fs = new FileStream(CatalogDb + "\\DBList.db", FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
            BinaryFormatter Bf = new BinaryFormatter();
            SortedList<uint, cSettings> DBList = (SortedList<uint, cSettings>)Bf.Deserialize(Fs);
            DBList.Add(GetNewId(DBList), Settings);
            Bf.Serialize(Fs, DBList);
            Fs.Close();
        }
 
        public static SortedList<uint, cSettings> GetDbList(string CatalogDb)
        {
            FileStream Fs = new FileStream(CatalogDb + "\\DBList.db", FileMode.Open, FileAccess.Read, FileShare.Read);
            BinaryFormatter Bf = new BinaryFormatter();
            SortedList<uint, cSettings> DBList = (SortedList<uint, cSettings>)Bf.Deserialize(Fs);
            Fs.Close();
            return DBList;
        }

    [Serializable]
    public class cSettings
    {
        public uint MaxSizeLogFile;          
        public string NameDb;                  
        public bool CreateNewOrRewrite;      
        public string PathDb;
        public uint LogCounter;
 
        public cSettings()
        {
            this.NameDb = string.Empty;
            this.MaxSizeLogFile = 0;
            this.CreateNewOrRewrite = false;
            this.LogCounter = 0;
        }
    }

        private static void CreateEqualIdToPath(cSettings Settings, string CatalogDb)
        {
            SortedList<uint, cSettings> DBList;
            var path = Path.Combine(CatalogDb, "DBList.db");
 
            using (var fs = new FileStream(path, FileMode.Open))
                DBList = (SortedList<uint, cSettings>)new BinaryFormatter().Deserialize(fs);
 
            DBList.Add(GetNewId(DBList), Settings);
 
            using (var fs = new FileStream(path, FileMode.Create))
                new BinaryFormatter().Serialize(fs, DBList);
        }