WPF绑定属性

 

1.创建model类

model类要继承接口INotifyPropertyChanged，用于通知客户端属性值已更改

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public class StudentModel : INotifyPropertyChanged {     public event PropertyChangedEventHandler PropertyChanged;       public void RaisePropertyChanged(string propertyName)     {         if (PropertyChanged != null)             PropertyChanged(this, new PropertyChangedEventArgs(propertyName));     }       private string name = "";     public string Name     {         get => name; set { name = value; RaisePropertyChanged("Name"); }     } }

　　

2.创建ViewModel类

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public class Window2ViewModel : INotifyPropertyChanged {     public event PropertyChangedEventHandler PropertyChanged;     public void RaisePropertyChanged(string propertyName)     {         if (PropertyChanged != null)             PropertyChanged(this, new PropertyChangedEventArgs(propertyName));     }       private StudentModel studentModel = new StudentModel();     public StudentModel StudentModel     {         get => studentModel; set { studentModel = value; RaisePropertyChanged("studentModel"); }       } }

　　

3.View绑定属性

(1)在Window2.xaml.cs中为DataContext赋值

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/// <summary> /// Window2.xaml 的交互逻辑 /// </summary> public partial class Window2 : Window {     public Window2()     {         InitializeComponent();         this.DataContext = new Window2ViewModel();     } }

（2）在Window2.xaml中绑定数据

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<Grid>     <TextBox HorizontalAlignment="Left" Height="23" Margin="243,160,0,0" TextWrapping="Wrap" Text="{Binding StudentModel.Name,UpdateSourceTrigger=PropertyChanged}" VerticalAlignment="Top" Width="120"/>     <Label HorizontalAlignment="Left" Height="23" Margin="243,208,0,0" Content="{Binding StudentModel.Name}" VerticalAlignment="Top" Width="120"/> </Grid>

　　

4.效果

在1中输入，2中会及时显示