如何在不关闭和打开应用程序的情况下在xamarin中更新我的数据？

// 数据模型
public class MyDataModel : INotifyPropertyChanged
{
    private string _data;

    public string Data
    {
        get { return _data; }
        set
        {
            if (_data != value)
            {
                _data = value;
                OnPropertyChanged(nameof(Data));
            }
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

// XAML文件
<Label Text="{Binding Data}" />

// 代码中更新数据
var myDataModel = new MyDataModel();
myDataModel.Data = "New data";