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src/BD.WTTS.Client/Services.Implementation/Steam/SteamServiceImpl2.cs

@@ -36,7 +36,7 @@ sealed class SteamServiceImpl2 : SteamServiceBaseImpl, ISteamConnectService
 
     public override ISteamConnectService Conn => this;
 
-    protected override string? StratSteamDefaultParameter => SteamSettings.SteamStratParameter.ActualValue;
+    protected override string? StratSteamDefaultParameter => SteamSettings.SteamStratParameter.Value;
 
     protected override bool IsRunSteamAdministrator => SteamSettings.IsRunSteamAdministrator.Value;
 

src/BD.WTTS.Client/Settings/Infrastructure/Abstractions/SettingsPropertyBase.cs

@@ -15,7 +15,7 @@ public abstract class SettingsPropertyBase
     public abstract void Reset();
 }
 
-[DebuggerDisplay("Value={Value}, PropertyName={PropertyName}, AutoSave={AutoSave}")]
+[DebuggerDisplay("Value={ActualValue}, PropertyName={PropertyName}, AutoSave={AutoSave}")]
 public abstract class SettingsPropertyBase<TValue> : SettingsPropertyBase, INotifyPropertyChanged
 {
     /// <summary>

src/BD.WTTS.Client/Settings/Infrastructure/Abstractions/SettingsStructPropertyBase.cs

@@ -14,6 +14,7 @@ public class SettingsStructPropertyBase<TValue, [DynamicallyAccessedMembers(Dyna
     public SettingsStructPropertyBase(TValue? @default = default, bool autoSave = true, [CallerMemberName] string? propertyName = null)
     {
         PropertyName = propertyName.ThrowIsNull();
+
         AutoSave = autoSave;
         Default = @default;
         ParameterExpression parameter = Expression.Parameter(typeof(TSettings), "obj");

src/BD.WTTS.Client/Settings/Infrastructure/SettingsProperty.cs

@@ -88,7 +88,12 @@ public class SettingsProperty<TValue, [DynamicallyAccessedMembers(DynamicallyAcc
 
     public override void RaiseValueChanged(bool notSave = false)
     {
-        setter(monitor.CurrentValue, value); // 赋值模型类属性
+        var setter_value = value;
+        if (EqualityComparer<TValue?>.Default.Equals(value, Default))
+        {
+            setter_value = default;
+        }
+        setter(monitor.CurrentValue, setter_value); // 赋值模型类属性
         OnValueChanged(value, value); // 调用变更事件
         if (!notSave && AutoSave) // 自动保存
         {

src/BD.WTTS.Client/Startup/Startup.cs

@@ -322,6 +322,7 @@ public abstract partial class Startup
                     {
                         ISettings<GeneralSettings_>.Load(configurationBuilder, directoryExists),
                         ISettings<UISettings_>.Load(configurationBuilder, directoryExists),
+                        ISettings<SteamSettings_>.Load(configurationBuilder, directoryExists),
                     };
                 if (TryGetPlugins(out var plugins_cfg))
                 {