表單傳值或父子視窗關閉問題

 

當我有兩表單(註一)時，我想要在父視窗按一個按鈕後開起子視窗並關閉父視窗，

然後於子視窗按一個按鈕後開啟父視窗並關閉子視窗要如何做?

註一：在VB.NET叫表單(form)、在WPF叫視窗(window)

 

直接看程式碼吧

一、使用Owner屬性來達成

於父視窗撰寫開啟子視窗並關閉父視窗程式

using System.Windows;

namespace use_owner_property
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void btnOpenWindow1_Click(object sender, RoutedEventArgs e)
        {
            Window1 Window1 = new Window1();
            Window1.Owner = (Window1)this.Owner;
            Window1.Show();
            this.Close();
        }     
    }
}

於子視窗撰寫開啟父視窗並關閉子視窗程式

using System.Windows;

namespace use_owner_property
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void btnOpenMainWindow_Click(object sender, RoutedEventArgs e)
        {
            MainWindow MainWindow = new MainWindow();
            MainWindow.Owner = (MainWindow)this.Owner;
            MainWindow.Show();
            this.Close();
        }
    }
}

Owner代表可以指定某視窗的所有權可以給其他視窗

 

二、使用Close方法來達成

於父視窗撰寫開啟子視窗並關閉父視窗程式

using System.Windows;

namespace use_owner_property
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void btnOpenWindow1_Click(object sender, RoutedEventArgs e)
        {
            Window1 Window1 = new Window1();
            Window1.Show();
            this.Close();
        }     
    }
}

於子視窗撰寫開啟父視窗並關閉子視窗程式

using System.Windows;

namespace use_owner_property
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void btnOpenMainWindow_Click(object sender, RoutedEventArgs e)
        {
            MainWindow MainWindow = new MainWindow();
            MainWindow.Show();
            this.Close();
        }
    }
}

範例檔

 

參考資料：

[C#.Net] Form之間的傳值