WPF Demo14 依赖属性

using System.Windows;

namespace DependencyPropertyDemo1
{
    public class Student:DependencyObject
    {
        public static readonly DependencyProperty NameProperty =
            DependencyProperty.Register("Name",typeof(string),typeof(Student));

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

<Window x:Class="DependencyPropertyDemo1.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">
    <Grid>
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="110,139,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="110,34,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="110,74,0,0" Name="textBox2" VerticalAlignment="Top" Width="120" />
    </Grid>
</Window>

using System.Windows;

namespace DependencyPropertyDemo1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            Student stu = new Student();
            stu.Name = this.textBox1.Text;
            this.textBox2.Text = stu.Name;
        }
    }
}

 

用法二：

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

namespace DependencyPropertyDemo2
{
    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);
        }
    }
}

<Window x:Class="DependencyPropertyDemo2.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">
    <Grid>
        <TextBox Height="23" HorizontalAlignment="Left" Margin="110,34,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="110,74,0,0" Name="textBox2" VerticalAlignment="Top" Width="120" />
    </Grid>
</Window>

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

namespace DependencyPropertyDemo2
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            Student stu = new Student();

            stu.SetBinding(Student.nameProperty, new Binding("Text") { Source = this.textBox1});

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