Add project files.

MonkeyFinder/ViewModel/MonkeyDetailsViewModel.cs

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+namespace MonkeyFinder.ViewModel;
+
+[QueryProperty("Monkey", "Monkey")]
+
+public partial class MonkeyDetailsViewModel : BaseViewModel
+{
+    IMap map;
+    public MonkeyDetailsViewModel(IMap map)
+    {
+        this.map = map;
+    }
+
+    [ObservableProperty]
+    Monkey monkey;
+
+    //[RelayCommand]
+    //async Task GoBackAsync()
+    //{
+    //    await Shell.Current.GoToAsync("..");
+    //}
+
+    [RelayCommand]
+
+    async Task OpenMapAsync()
+    {
+        try
+        {
+            await map.OpenAsync(Monkey.Latitude, Monkey.Longitude,
+                new MapLaunchOptions
+                {
+                    Name = Monkey.Name,
+                    NavigationMode = NavigationMode.None
+                });
+        }
+        catch (Exception ex)
+        {
+            Debug.WriteLine(ex);
+            await Shell.Current.DisplayAlert("Error!",
+                $"Unable to open map: {ex.Message}", "OK");
+        }
+    }
+
+}