Question

我有一个主窗口，并希望将值传递给弹出窗口（它将使用该值设置一些依赖于该值的其他值）。弹出窗口有多个用于用户输入的文本框。当按下一个名为SaveButton的按钮时，我希望用户输入（所有这些）都被发送回主窗口。我怎么能做到这一点？

我是C＃的新手，我知道有类似的问题。但是，我很难根据具体情况调整答案。感谢您在回答时牢记这一点！

非常感谢你！

编辑：关于代码我的代码：用于启动PopUp窗口（这是一个名为PopUp的Window WPF）

PopUp popUp = new PopUp();
popUp.ShowDialog

除了标准内容和按钮点击事件的事件处理程序外，PopUp.xaml.cs为空。

Answer 1

看看这个：

您的主窗口：

namespace WpfApplication1
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    //Defining public or internal parameters
    public int MainWindowProp1 { get; set; }
    public string MainWindowProp2 { get; set; }

    public MainWindow()
    {
        InitializeComponent();
        this.Loaded += MainWindow_Loaded;
    }

    private void MainWindow_Loaded(object sender, RoutedEventArgs e)
    {
        //When you call your child window, pass this (mainwindow) as parameter.
        childWindow cw = new WpfApplication1.childWindow(this);
        cw.Param2 = "test";
        cw.Param1 = 12;
        cw.Closed += Cw_Closed;
        cw.ShowDialog();
    }

    private void Cw_Closed(object sender, EventArgs e)
    {
        //On closed event, you can cast the sender as your child window.
        var child = (sender as childWindow);
        var param1 = child.Param1;
        var param3 = child.Param2;
    }

    public void TestMethod()
    {
        //do anything you want
    }
}
}

和你的子窗口：

namespace WpfApplication1
{
/// <summary>
/// Interaction logic for childWindow.xaml
/// </summary>
public partial class childWindow : Window
{
    //declare Mainwindow as a parameter in your child window
    public MainWindow mainWindow;
    public int Param1 { get; set; }
    public string Param2 { get; set; }
    //Add a parameter in your child window contructor.
    public childWindow(MainWindow _mainWindow)
    {
        InitializeComponent();
        //Assign your global parameter mainWindow to the _mainWindow parameter. 
        this.mainWindow = _mainWindow;
        this.Loaded += ChildWindow_Loaded;
    }

    private void ChildWindow_Loaded(object sender, RoutedEventArgs e)
    {

        //You can get or set your main window properties. 
        this.mainWindow.MainWindowProp1 = 5;
        this.mainWindow.MainWindowProp2 = "test";

        //You can call methods ant events etc.. of your main window too (depending on acces modifiers).
      this.mainWindow.TestMethod();
    }
}
}

Answer 2

总的来说，最简化的解决方案是：

从MainWindow到子窗口（Window1）;

((Window1)Application.Current.Windows[1]).testlabel.Content = "In Sync";

从子窗口到MainWindow；

((MainWindow)Application.Current.MainWindow).label2.Content = "whatever";

将值从主窗口传递到子窗口，然后从子窗口返回多个值到主窗口

2 个答案: