Models/TestLiquid.cs

@@ -1,6 +1,6 @@
 namespace MembranePoreTester.Models
 {
-    public class TestLiquid
+    public class TestLiquid : IEquatable<TestLiquid>
     {
         public string Name { get; set; }
         public double SurfaceTension { get; set; } // mN/m, 25°C
@@ -10,7 +10,7 @@
         public double C_cmHg => 2.15 * SurfaceTension;
         public double C_psi => 0.415 * SurfaceTension;
 
-        public static List<TestLiquid> Predefined => new()
+        private static readonly List<TestLiquid> _predefined = new()
         {
             new TestLiquid { Name = "水", SurfaceTension = 72.0 },
             new TestLiquid { Name = "石油馏分", SurfaceTension = 30.0 },
@@ -18,5 +18,21 @@
             new TestLiquid { Name = "液态石蜡", SurfaceTension = 34.7 },
             new TestLiquid { Name = "BSD16", SurfaceTension = 16.0 }  // 新增
         };
+
+        // 返回可修改的全局液体列表（允许在运行时添加自定义液体便于恢复选择）
+        public static List<TestLiquid> Predefined => _predefined;
+
+        public override string ToString() => Name;
+
+        public bool Equals(TestLiquid other)
+        {
+            if (other is null) return false;
+            // 以 Name 为主键判断相等，SurfaceTension 可作为辅助信息
+            return string.Equals(Name, other.Name, StringComparison.Ordinal);
+        }
+
+        public override bool Equals(object obj) => Equals(obj as TestLiquid);
+
+        public override int GetHashCode() => Name?.GetHashCode() ?? 0;
     }
 }

ViewModels/BubblePointViewModel.cs

@@ -42,7 +42,7 @@ namespace MembranePoreTester.ViewModels
             });
         }
 
-        public List<TestLiquid> Liquids => TestLiquid.Predefined;
+        public IReadOnlyList<TestLiquid> Liquids => TestLiquid.Predefined;
         public List<string> PressureUnits => new() { "Pa", "cmHg", "psi" };
         public List<string> MembraneTypes => new() { "平板膜", "中空纤维膜" };
 

ViewModels/PoreDistributionViewModel.cs

@@ -243,11 +243,22 @@ namespace MembranePoreTester.ViewModels
                 {
                     // 当 Record 替换时（例如从数据库加载），重新订阅其 DataPoints 集合
                     HookDataPointsCollection(_record?.DataPoints);
+
+                    // 同步液体选择
+                    if (_record?.Liquid != null)
+                    {
+                        var matchedLiquid = Liquids.FirstOrDefault(l => l.Name == _record.Liquid.Name);
+                        SelectedLiquid = matchedLiquid ?? _record.Liquid;
+                    }
+                    else
+                    {
+                        SelectedLiquid = Liquids.FirstOrDefault();
+                    }
                 }
             }
         }
 
-        public List<TestLiquid> Liquids => TestLiquid.Predefined;
+        public IReadOnlyList<TestLiquid> Liquids => TestLiquid.Predefined;
         public List<string> PressureUnits => new() { "Pa", "cmHg", "psi" };
         public List<string> MembraneTypes => new() { "平板膜", "中空纤维膜" };
 
@@ -944,6 +955,20 @@ namespace MembranePoreTester.ViewModels
                 });
             }
 
+            // 同步液体选择
+            if (Record.Liquid != null)
+            {
+                var matchedLiquid = Liquids.FirstOrDefault(l => l.Name == Record.Liquid.Name);
+                SelectedLiquid = matchedLiquid ?? Record.Liquid;
+            }
+            else
+            {
+                SelectedLiquid = Liquids.FirstOrDefault();
+            }
+
+
+
+
             // 重新计算平均孔径和分布（触发计算命令）
             Calculate();
         }

Views/PoreDistributionView.xaml.cs

@@ -95,8 +95,8 @@ namespace MembranePoreTester.Views
         {
             if (e.Action == System.Collections.Specialized.NotifyCollectionChangedAction.Add)
             {
-                ScrollDataGridToEnd(dgWetData);
-                ScrollDataGridToEnd(dgDryData);
+                //ScrollDataGridToEnd(dgWetData);
+                //ScrollDataGridToEnd(dgDryData);
             }
         }