RaumfeldNET.ImageDataCache.saveToDB C# (CSharp) Метод

        public override void saveToDB()
        {
            if (imageCacheNew.Count == 0)
                return;

            Dictionary<String, Image> tempData;

            try
            {

                tempData = new Dictionary<string, Image>(imageCacheNew);
                imageCacheNew.Clear();

                this.connect();

                SQLiteCommand command = new SQLiteCommand(connection);

                // only store new images
                foreach (var imageData in tempData)
                {
                    command.CommandText = String.Format("REPLACE INTO imageData (id, data) VALUES ('{0}', @0);", imageData.Key);
                    SQLiteParameter parameter = new SQLiteParameter("@0", System.Data.DbType.Binary);
                    parameter.Value = imageToByteArray(imageData.Value);
                    command.Parameters.Add(parameter);
                    command.ExecuteNonQueryAsync();
                }

                command.Dispose();

                this.close();

                tempData.Clear();
            }
            catch (Exception e)
            {
                this.writeLog(LogType.Warning, "Fehler beim speichern der Bilder auf der Datenbank", e);
            }
        }

 public void shutDown()
 {
     imageDataCache.saveToDB();
 }