Initial commit

C#/WPFProject/MainWindow.xaml.cs

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+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 WPFProject {
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window {
+        public MainWindow() {
+            InitializeComponent();
+        }
+
+        private void HomeClick(object button, EventArgs e) {
+            Title.Content = "Startseite";
+            SwitchSide(Home);
+        }
+        
+        private void ProductsClick(object button, EventArgs e) {
+            Title.Content = "Produkte";
+            SwitchSide(Products);
+        }
+        
+        private void ContactClick(object button, EventArgs e) {
+            Title.Content = "Kontakt";
+            SwitchSide(Contact);
+        }
+
+        private void SwitchSide(Grid grid) {
+            Home.Visibility = Visibility.Hidden;
+            Products.Visibility = Visibility.Hidden;
+            Contact.Visibility = Visibility.Hidden;
+
+            grid.Visibility = Visibility.Visible;
+        }
+    }
+}