WPF Demo14 依赖属性

系统管理员 2021-01-08 14:18 492阅读 0赞

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); }
            }
        }
    }

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;
            }
        }
    }

![529017-20170518102842697-609229384.gif][]

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);
            }
        }
    }

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});
            }
        }
    }

![529017-20170518103601822-1565961702.gif][]

[529017-20170518102842697-609229384.gif]: /images/1610115479100.gif
[529017-20170518103601822-1565961702.gif]: /images/1610115456621.gif