Добавьте файлы проекта.

Pages/IGEsPage.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 GroundOrganizer
+{
+    /// <summary>
+    /// Логика взаимодействия для IGEsPage.xaml
+    /// </summary>
+    public partial class IGEsPage : Page
+    {
+        private ViewModel vm;
+        public IGEsPage()
+        {
+            InitializeComponent();
+            vm = App.Current.MainWindow.DataContext as ViewModel;
+            DataContext = vm;
+        }
+
+        private void ToCSV_Click(object sender, RoutedEventArgs e)
+        {
+            vm.SaveIGEsInCsv();
+        }
+
+        private void FromCSV_Click(object sender, RoutedEventArgs e)
+        {
+            vm.ReadIGEsFromCsv();
+        }
+    }
+}