Update

ViewModel/RawFilePageVM.cs

@@ -0,0 +1,37 @@
+using System.ComponentModel;
+using System.Windows.Input;
+using FileReadAndWrite.Model;
+using FileReadAndWrite.Service;
+using FileReadAndWrite.View;
+
+namespace FileReadAndWrite.ViewModel;
+
+public class RawFilePageVM : INotifyPropertyChanged {
+    private readonly FileService _fileService;
+
+    private string _rawFileContent = "";
+    public string RawFileContent { 
+        get => _rawFileContent; 
+        set {
+            _rawFileContent = value;
+            OnPropertyChanged(nameof(RawFileContent));
+        } 
+    }
+
+    public ICommand LoadRawFileCmd { get; }
+
+    public RawFilePageVM(FileService fileService) {
+        _fileService = fileService;
+
+        LoadRawFileCmd = new Command(async () => await LoadRawFile());
+    }
+
+    public async Task LoadRawFile(){
+        RawFileContent = await _fileService.LoadAsset("data.txt");
+    }
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+    public void OnPropertyChanged(string propertyName) {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+    }
+}