diff --git a/VPet.Solution/Models/SaveViewer/SaveModel.cs b/VPet.Solution/Models/SaveViewer/SaveModel.cs
index 58e26d0..4b7b878 100644
--- a/VPet.Solution/Models/SaveViewer/SaveModel.cs
+++ b/VPet.Solution/Models/SaveViewer/SaveModel.cs
@@ -124,10 +124,10 @@ public class SaveModel : ObservableClass<SaveModel>
     #endregion
 
     #region Mode
-    private VPet_Simulator.Core.GameSave.ModeType _mode;
+    private VPet_Simulator.Core.IGameSave.ModeType _mode;
 
-    [ReflectionProperty(nameof(VPet_Simulator.Core.GameSave.Mode))]
-    public VPet_Simulator.Core.GameSave.ModeType Mode
+    [ReflectionProperty(nameof(VPet_Simulator.Core.IGameSave.Mode))]
+    public VPet_Simulator.Core.IGameSave.ModeType Mode
     {
         get => _mode;
         set => SetProperty(ref _mode, value);
@@ -219,7 +219,7 @@ public class SaveModel : ObservableClass<SaveModel>
         }
     }
 
-    private void LoadSave(VPet_Simulator.Core.GameSave save)
+    private void LoadSave(VPet_Simulator.Core.IGameSave save)
     {
         ReflectionUtils.SetValue(save, this);
     }
diff --git a/VPet.Solution/Models/SettingEditor/InteractiveSettingModel.cs b/VPet.Solution/Models/SettingEditor/InteractiveSettingModel.cs
index 602b797..74e1c1b 100644
--- a/VPet.Solution/Models/SettingEditor/InteractiveSettingModel.cs
+++ b/VPet.Solution/Models/SettingEditor/InteractiveSettingModel.cs
@@ -51,20 +51,20 @@ public class InteractiveSettingModel : ObservableClass<InteractiveSettingModel>
     #endregion
 
     #region CalFunState
-    private GameSave.ModeType _calFunState;
+    private IGameSave.ModeType _calFunState;
 
     /// <summary>
     /// 非计算模式下默认模式
     /// </summary>
     [ReflectionProperty(nameof(VPet_Simulator.Windows.Interface.Setting.CalFunState))]
-    public GameSave.ModeType CalFunState
+    public IGameSave.ModeType CalFunState
     {
         get => _calFunState;
         set => SetProperty(ref _calFunState, value);
     }
 
-    public ObservableCollection<GameSave.ModeType> ModeTypes { get; } =
-        new(Enum.GetValues(typeof(GameSave.ModeType)).Cast<GameSave.ModeType>());
+    public ObservableCollection<IGameSave.ModeType> ModeTypes { get; } =
+        new(Enum.GetValues(typeof(IGameSave.ModeType)).Cast<IGameSave.ModeType>());
     #endregion
 
     #region LastCacheDate
diff --git a/VPet.Solution/Utils/Expansions.cs b/VPet.Solution/Utils/Expansions.cs
index 6e78a73..02f2268 100644
--- a/VPet.Solution/Utils/Expansions.cs
+++ b/VPet.Solution/Utils/Expansions.cs
@@ -28,29 +28,6 @@ public static class Extensions
         return source.IndexOf(value, comparisonType) >= 0;
     }
 
-    public static TSource MaxBy<TSource, TKey>(
-        this IEnumerable<TSource> source,
-        Func<TSource, TKey> keySelector
-    )
-    {
-        using IEnumerator<TSource> e = source.GetEnumerator();
-        if (e.MoveNext() is false)
-            return default;
-        TSource value = e.Current;
-        TKey key = keySelector(value);
-        while (e.MoveNext())
-        {
-            TSource nextValue = e.Current;
-            TKey nextKey = keySelector(nextValue);
-            if (Comparer<TKey>.Default.Compare(nextKey, key) > 0)
-            {
-                key = nextKey;
-                value = nextValue;
-            }
-        }
-        return value;
-    }
-
     //public static string GetSourceFile(this BitmapImage image)
     //{
     //    return ((FileStream)image.StreamSource).Name;