【WPF】自定义类作为UserControl的依赖属性的binding问题！！！

[-小仙-]

定义一个类：

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

        // Using a DependencyProperty as the backing store for Name.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty NameProperty =
            DependencyProperty.Register("Name", typeof(string), typeof(Student));
    }

定义一个UserControl：

public partial class UsercontrolBinding : UserControl
    {
        public UsercontrolBinding()
        {
            InitializeComponent();

            stu = new Student();
            stu.Name = "ABC";

            tb1.SetBinding(TextBox.TextProperty, new Binding("Name") { Source = stu });
            tb2.SetBinding(TextBlock.TextProperty, new Binding("TecName") { Source = this });
        }

        public Student stu
        {
            get { return (Student)GetValue(stuProperty); }
            set { SetValue(stuProperty, value); }
        }

        // Using a DependencyProperty as the backing store for stu.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty stuProperty =
            DependencyProperty.Register("stu", typeof(Student), typeof(UsercontrolBinding));




        public string TecName
        {
            get { return (string)GetValue(TecNameProperty); }
            set { SetValue(TecNameProperty, value); }
        }

        // Using a DependencyProperty as the backing store for TecName.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TecNameProperty =
            DependencyProperty.Register("TecName", typeof(string), typeof(UsercontrolBinding));

        
        
    }

界面XAML：

<StackPanel>
        <TextBox  x:Name="tb1" Text="demo"/>      
        <TextBlock x:Name="tb2" Text="demo"/>
    </StackPanel>

然后在主程序中使用：
<l:UsercontrolBinding x:Name="ub1" />

主程序对应代码：

  public MainWindow()
        {
            InitializeComponent();
stuB = new Student()
            {
                Name="Zhang",
            };

 TecName = "TecYang";
 ub1.SetBinding(UsercontrolBinding.TecNameProperty, new Binding("TecName") { Source = this });
ub1.SetBinding(UsercontrolBinding.stuProperty, new Binding("stuB") { Source = this });
}
public string TecName
        {
            get { return (string)GetValue(TecNameProperty); }
            set { SetValue(TecNameProperty, value); }
        }

        // Using a DependencyProperty as the backing store for TecName.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TecNameProperty =
            DependencyProperty.Register("TecName", typeof(string), typeof(MainWindow));

public Student stuB
        {
            get { return (Student)GetValue(stuBProperty); }
            set { SetValue(stuBProperty, value); }
        }

        // Using a DependencyProperty as the backing store for stuB.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty stuBProperty =
            DependencyProperty.Register("stuB", typeof(Student), typeof(MainWindow));

TecName 是string类型，可以binding成功，而Student 类型的stuB却不可以binding成功？ 这是为什么呢？应该怎么做！

[mmmm433]

LZ，神马意思，代码看不明白呢

[-小仙-]

原来是binding出错了：
应该是

 public UsercontrolBinding()
        {
            InitializeComponent();

            stu = new Student();
            stu.Name = "ABC";

            tb1.SetBinding(TextBox.TextProperty, new Binding("stu.Name") { Source = this});
            tb2.SetBinding(TextBlock.TextProperty, new Binding("TecName") { Source = this });
        }

binding的源必须是对象，而stu在UsercontrolBinding 定以为依赖属性的，它不是一个对象

[Bullatus]

问题解决？

[hanq1314]

属性为int 或者string 都好使 一旦附加对象类型的属性 binding 就不能用了