WPF 窗口之间的切换

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WindwoToggle
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void to_new_window_click(object sender, RoutedEventArgs e)
        {
            Window1 win = new Window1("好的");
            App.Current.MainWindow = win;
            this.Close();
            win.Show();
            
        }

        private void to_dialog(object sender, RoutedEventArgs e)
        {
            Window1 win = new Window1("打开对话框!");
            App.Current.MainWindow = win;
            this.Close();
            win.ShowDialog();

        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace WindwoToggle
{
    /// <summary>
    /// Window1.xaml 的交互逻辑
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1(String value)
        {
            InitializeComponent();
            button.Content = value;
        }

        private void to_old_window_click(object sender, RoutedEventArgs e)
        {
            MainWindow win = new MainWindow();
            App.Current.MainWindow = win;
            this.Close();
            win.Show();
            
        }
    }
}

两种方式： show、showDialog

窗口之间传值： 在构造函数的传值