finally

MainWindow.xaml.cs

@@ -0,0 +1,39 @@
+using System.Text;
+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 Lab
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private void ClickOpenTriangleWindow      (object sender, RoutedEventArgs e) => Open( new TriangleWindow()      );
+        private void ClickOpenFibonacciWindow     (object sender, RoutedEventArgs e) => Open( new FibonacciWindow()     );
+        private void ClickOpenArrayReverseWindow  (object sender, RoutedEventArgs e) => Open( new ArrayReverseWindow()  );
+        private void ClickOpenMatrixCompareWindow (object sender, RoutedEventArgs e) => Open( new MatrixCompareWindow() );
+        private void ClickOpenMatrixFlipWindow    (object sender, RoutedEventArgs e) => Open( new MatrixFlipWindow()    );
+        private void ClickOpenClassMultiplyWindow (object sender, RoutedEventArgs e) => Open( new ClassMultiplyWindow() );
+
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+
+        private void Open(Window w)
+        {
+            w.Owner = this;
+            w.Closed += (_, _) => Show();
+            Hide();
+            w.Show();
+        }
+    }
+}