数据绑定之Binding双向绑定

来源：互联网发布：enako 知乎编辑：程序博客网时间：2024/05/03 06:49

Xaml代码

 <!-- Binding双向绑定 --> <StackPanel Name="stackPanel" HorizontalAlignment="Left" VerticalAlignment="Top" Orientation="Vertical">        <TextBox Name="lbId" Text="{Binding ID}"/>      //使用Binding绑定ID属性        <TextBox Name="lbName" Text="{Binding Name}"/>  //使用Binding绑定Name属性        <TextBox Name="lbAge" Text="{Binding Age}"/>    //使用Binding绑定Age属性        <Button Width="100" Height="50" Content="加1" Click="Button_Click"/> </StackPanel>

C#代码

    public MainWindow()    {        InitializeComponent();        Init();    }    StudentData stuData = new StudentData();  //实例类    public void Init()    {        stuData.ID = 1001;        stuData.Name = "小明";        stuData.Age = 18;        stuData.Name = "小明";        //this.DataContext = stuData;       //整个窗口内的所有元素都可以绑定此数据        stackPanel.DataContext = stuData;  //仅stackPanel内的所有元素可以绑定此数据      }    //声明类    private void Button_Click(object sender, RoutedEventArgs e)    {        stuData.Age++;        MessageBox.Show(stuData.Age.ToString());    }}//引用INotifyPropertyChanged接口，微软双向机制，通知客户端属性值已更改。public class StudentData:INotifyPropertyChanged{    private int _ID;            //声明字段    private String _Name;       //声明字段    private int _Age;           //声明字段    public int ID    {        get        {            return _ID;        }        set        {            this._ID = value;            if (PropertyChanged !=null)            {                PropertyChanged(this, new PropertyChangedEventArgs("ID"));                //如果PropertyChanged状态改变了，响应绑定数据更新            }        }    }        public String Name        {            get            {                return _Name;            }            set            {                this._Name = value;                if (PropertyChanged != null)                {                    PropertyChanged(this, new PropertyChangedEventArgs("Name"));                }            }        }        public int Age        {            get            {                return _Age;            }            set            {                this._Age = value;                if (PropertyChanged != null)                {                    PropertyChanged(this, new PropertyChangedEventArgs("Age"));                }            }        }        public event PropertyChangedEventHandler PropertyChanged;}

这里写图片描述

“`

阅读全文

'); })();