简单类作为绑定数据源

Question

我创建了一个演示项目，在我的 MainWindow 和运行时创建的子对象之间进行双向数据绑定，该子对象从 UserControl 和 INotifyPropertyChanged 派生，顶部有一个 TextBox。我的来源是我的 MainWindow 上的私人 List<Byte>。

public partial class MainWindow : Window, INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;
    private List<Byte> buffer;

    public MainWindow()
    {
        Binding binding;
        binding = new Binding("Buffer");
        binding.ElementName = "window";
        binding.Mode = BindingMode.TwoWay;

        myEdit = new MyEdit();
        myEdit.SetBinding(MyEdit.BufferValueProperty, binding);
    }

    public List<Byte> Buffer
    {
        get
        {
            return this.buffer;
        }

        set
        {
            this.buffer = value;
            NotifyPropertyChanged("Buffer");
        }
    }

    private void NotifyPropertyChanged(String propertyName)
    {
        var handler = PropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

现在我想在我的实际项目中实现它。但我的数据源不在 MainWindow 中，它在另一个没有 XAML 代码的简单类中。

public class SimpleClass: INotifyPropertyChanged
{
    private List<Byte> buffer;

    public event PropertyChangedEventHandler PropertyChanged;

    public SimpleClass()
    {
        this.buffer = new List<Byte>();

        Binding binding;
        binding = new Binding("Buffer");
        binding.ElementName = "?????????";
        binding.Mode = BindingMode.TwoWay;

        myEdit = new MyEdit();
        myEdit.SetBinding(MyEdit.BufferValueProperty, binding);
    }
}

我的问题是，我在哪里可以获得绑定的 ElementName？这种方式可以吗？

Answer 1

而不是 ElementName 直接设置 Source。您还需要定义Buffer 属性。绑定不适用于字段。

public class SimpleClass: INotifyPropertyChanged
{
    private List<Byte> buffer;
    public List<Byte> Buffer { get { return buffer; } set { buffer = value; } }

    public event PropertyChangedEventHandler PropertyChanged;

    public SimpleClass()
    {
        this.buffer = new List<Byte>();

        Binding binding = new Binding("Buffer");
        binding.Source = this;
        binding.Mode = BindingMode.TwoWay;

        myEdit = new MyEdit();
        myEdit.SetBinding(MyEdit.BufferValueProperty, binding);
    }
}