WPF 父子窗体间传值

废话不多说，上教程。🤩

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WPF 父子窗体间传值
1.父 -> 子
1.1.父窗体.cs

public partial class MainWindow : Window{
  public MainWindow()
  {
      InitializeComponent();
  }
  public void MainWindow_OnLoaded(object sender, RoutedEventArgs e){
    ChildrenWindow children= new ChildrenWindow ();
    children.value1= "父窗体传过来的值！！";
    children.sendMessage = Recevie;
    children.ShowDialog();
  }
}

1.2.子窗体.cs

public partial class ChildrenWindow : Window{
  public string value1 { get; set; } //接受父窗体传过来的值
  public ChildrenWindow ()
  {
      InitializeComponent();
  }
  public void MainWindow_OnLoaded(object sender, RoutedEventArgs e){
     TextBox.Text=value1;
  }
}

2.子 -> 父
1.2.子窗体.cs

public partial class ChildrenWindow : Window{
  //返回给父窗体
  public delegate void SendMessage(string value);
  public SendMessage sendMessage;
  public ChildrenWindow ()
  {
      InitializeComponent();
  }
  public void MainWindow_OnLoaded(object sender, RoutedEventArgs e){
     sendMessage("子窗体返回的值！！！");//返回给父窗体
  }
}

2.2.父窗体.cs

public partial class MainWindow : Window{
  //接受子窗体返回来的值
  public void Recevie(string value) {
      ResStr.Text = value;
  }
  public MainWindow()
  {
      InitializeComponent();
  }
  public void MainWindow_OnLoaded(object sender, RoutedEventArgs e){
    ChildrenWindow children= new ChildrenWindow ();
    children.sendMessage = Recevie;
    children.ShowDialog();
  }
}

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到这里就🎉🎉🎉大功告成了！🎉🎉🎉 你学废了吗😀