Update

View/AppDataFilePage.xaml.cs

@@ -1,10 +1,14 @@
+using FileReadAndWrite.Service;
+using FileReadAndWrite.ViewModel;
+
 namespace FileReadAndWrite.View
 {
     public partial class AppDataFilePage : ContentPage
     {
-        public AppDataFilePage()
+        public AppDataFilePage(FileService fileService)
         {
             InitializeComponent();
+            BindingContext = new AppDataFilePageVM(fileService);
         }
     }
 }