更新整理

WPFluent.Gallery/ViewModels/ViewModel.cs

@@ -0,0 +1,32 @@
+namespace WPFluent.Gallery.ViewModels;
+
+public abstract partial class ViewModel : ObservableObject, INavigationAware
+{
+    /// <inheritdoc />
+    public virtual Task OnNavigatedToAsync()
+    {
+        OnNavigatedTo();
+
+        return Task.CompletedTask;
+    }
+
+    /// <summary>
+    /// Handles the event that is fired after the component is navigated to.
+    /// </summary>
+    // ReSharper disable once MemberCanBeProtected.Global
+    public virtual void OnNavigatedTo() { }
+
+    /// <inheritdoc />
+    public virtual Task OnNavigatedFromAsync()
+    {
+        OnNavigatedFrom();
+
+        return Task.CompletedTask;
+    }
+
+    /// <summary>
+    /// Handles the event that is fired before the component is navigated from.
+    /// </summary>
+    // ReSharper disable once MemberCanBeProtected.Global
+    public virtual void OnNavigatedFrom() { }
+}