程序代码：

    public class Student : DependencyObject
    {
        public static readonly DependencyProperty NameProperty = DependencyProperty.Register("Name", typeof(string), typeof(Student));

        public string Name
        {
            get 
            {
                return (string)GetValue(NameProperty);
            }
            set
            {
                SetValue(NameProperty, value);
            }
        }

        public BindingExpressionBase SetBinding(DependencyProperty dp, BindingBase binding)
        {
            return BindingOperations.SetBinding(this, dp, binding);
        }
    }

    public partial class MainWindow : Window
    {

        public MainWindow()
        {
            InitializeComponent();

            Student stu = new Student();
            stu.SetBinding(Student.NameProperty, new Binding("Text") { Source = this.textBox1});
            this.textBox2.SetBinding(TextBox.TextProperty, new Binding("Name") { Source = stu});
        }