<Window x:Class="TestOfFirstDependencyObject.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <StackPanel >
        <TextBox x:Name="textBox1" BorderBrush="Black" Margin="5" />
        <TextBox x:Name="textBox2" BorderBrush="Black" Margin="5" />
        <Button Content="OK" Margin="5" Click="Button_Click" />
    </StackPanel>
</Window>

using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

namespace TestOfFirstDependencyObject
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private Student stu;

        public MainWindow()
        {
            InitializeComponent();

            stu = new Student();
            //Binding binding = new Binding("Text")
            //                      {
            //                          Source = textBox1
            //                      };
            //BindingOperations.SetBinding(stu,Student.NameProperty,binding);

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

        }

        private void Button_Click(object sender,RoutedEventArgs e)
        {
            //Student stu = new Student();
            //stu.SetValue(Student.NameProperty,this.textBox1.Text);
            //textBox2.Text = stu.GetValue(Student.NameProperty) as string;

            //MessageBox.Show(stu.GetValue(Student.NameProperty).ToString());

            //Student stu = new Student();
            //stu.Name = textBox1.Text;
            //this.textBox2.Text = stu.Name;
        }
    }

    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 int Age
        {
            get { return (int)GetValue(AgeProperty); }
            set { SetValue(AgeProperty,value); }
        }

        // Using a DependencyProperty as the backing store for Age.  This enables animation,styling,binding,etc...
        public static readonly DependencyProperty AgeProperty =
            DependencyProperty.Register("Age",typeof(int),typeof(Student),new UIPropertyMetadata(0));



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

        public static readonly DependencyProperty IdProperty = DependencyProperty.Register("Id",typeof(Student));

        public int Id
        {
            get { return (int)this.GetValue(IdProperty); }
            set { this.SetValue(IdProperty,value); }
        }



        public string School
        {
            get { return (string)GetValue(SchoolProperty); }
            set { SetValue(SchoolProperty,value); }
        }

        // Using a DependencyProperty as the backing store for School.  This enables animation,etc...
        public static readonly DependencyProperty SchoolProperty =
            DependencyProperty.Register("School",new UIPropertyMetadata(""));

        
    }
}