我是 C# 新手，但我不明白為什么我無(wú)法訪問(wèn) MainWindow 類中的列表。public partial class MainWindow : Window    {        public MainWindow()        {            InitializeComponent();            List<EqualisationSetting> equalisationSettings = new List<EqualisationSetting>            {                new EqualisationSetting { LowerFrequencyBound = 20, UpperFrequencyBound = 250, DecibelRatioChange = 0 },                new EqualisationSetting { LowerFrequencyBound = 250, UpperFrequencyBound = 4000, DecibelRatioChange = 0}            };            ItemsCountroller.ItemsSource = equalisationSettings;        }        private void AddFrequencyBoundButton_Click(object sender, RoutedEventArgs e)        {            equalisationSettings.add(new EqualisationSetting();        }    }它拋出“當(dāng)前上下文 SoundEditor 中不存在名稱‘equalizationSettings’”。