diff --git a/src/CAD/IFox.CAD.Shared/ExtensionMethod/CurveEx.cs b/src/CAD/IFox.CAD.Shared/ExtensionMethod/CurveEx.cs
index bfca634af56a45f77ea2c10de9f2b389c60bcb06..f8b83b5ece2607d2b438588b8b66d6063471c1aa 100644
--- a/src/CAD/IFox.CAD.Shared/ExtensionMethod/CurveEx.cs
+++ b/src/CAD/IFox.CAD.Shared/ExtensionMethod/CurveEx.cs
@@ -207,6 +207,77 @@ public static List<Curve> BreakCurve(this List<Curve> curves)
         return newCurves;
     }
 
+    /// <summary>
+    /// 在z法向量平面打断曲线
+    /// </summary>
+    /// <param name="curves">曲线列表</param>
+    /// <returns>打断后的曲线列表</returns>
+    /// <exception cref="ArgumentNullException">传入的曲线列表错误</exception>
+    public static List<Curve> BreakCurveOnZPlane(this List<Curve> curves)
+    {
+        if (curves is null)
+            throw new ArgumentNullException(nameof(curves));
+        var zPlane = new Plane(Point3d.Origin, Vector3d.ZAxis);
+        var curvesTemp = curves.Select(c => c.GetProjectedCurve(zPlane, Vector3d.ZAxis)).ToList();
+        var geCurves = new List<CompositeCurve3d>(); // 存储曲线转换后的复合曲线
+        var paramss = new List<HashSet<double>>();      // 存储每个曲线的交点参数值
+
+        for (int i = 0; i < curvesTemp.Count; i++)
+        {
+            paramss.Add(new HashSet<double>());
+            var cc3d = curvesTemp[i].ToCompositeCurve3d();
+            if (cc3d is not null)
+            {
+                geCurves.Add(cc3d);
+            }
+        }
+        var newCurves = new List<Curve>();
+        var cci3d = new CurveCurveIntersector3d();
+
+        for (int i = 0; i < curvesTemp.Count; i++)
+        {
+            var gc1 = geCurves[i];
+            var pars1 = paramss[i]; // 引用
+            for (int j = i; j < curvesTemp.Count; j++)
+            {
+                var gc2 = geCurves[j];
+                var pars2 = paramss[j]; // 引用
+
+                cci3d.Set(gc1, gc2, Vector3d.ZAxis);
+
+                for (int k = 0; k < cci3d.NumberOfIntersectionPoints; k++)
+                {
+                    var pars = cci3d.GetIntersectionParameters(k);
+                    pars1.Add(pars[0]); // 引用修改会同步到源对象
+                    pars2.Add(pars[1]); // 引用修改会同步到源对象
+                }
+            }
+            var curNow = curvesTemp[i];
+            var length = curNow.GetLength();
+            List<double> np = pars1.Where(p => p >= 0 && p <= length)
+                .Select(curNow.GetParameterAtDistance)
+                .Where(p => !(Math.Abs(p - curNow.StartParam) < 1e-6 || Math.Abs(p - curNow.EndParam) < 1e-6))
+                .ToList();
+            if (np.Count > 0)
+            {
+                var splitCurs = curNow.GetSplitCurves(np, true);
+                if (splitCurs.Count() > 1)
+                {
+                    newCurves.AddRange(splitCurs);
+                }
+                else
+                {
+                    newCurves.Add(curNow.CloneEx());
+                }
+            }
+            else
+            {
+                newCurves.Add(curNow.CloneEx());
+            }
+        }
+
+        return newCurves;
+    }
     // 转换DBCurve为GeCurved
 
     #region Curve
diff --git a/src/CAD/IFox.CAD.Shared/ExtensionMethod/DBDictionaryEx.cs b/src/CAD/IFox.CAD.Shared/ExtensionMethod/DBDictionaryEx.cs
index 3942b6ccab7092955df5b69b7978c814363eddac..66fe217a7f41893e93890a55a61b93492d14bb1b 100644
--- a/src/CAD/IFox.CAD.Shared/ExtensionMethod/DBDictionaryEx.cs
+++ b/src/CAD/IFox.CAD.Shared/ExtensionMethod/DBDictionaryEx.cs
@@ -18,9 +18,8 @@ public static IEnumerable<T> GetAllObjects<T>(this DBDictionary dict) where T :
         var tr = DBTrans.GetTopTransaction(dict.Database);
         foreach (DBDictionaryEntry e in dict)
         {
-            var ent = tr.GetObject<T>(e.Value, OpenMode.ForRead);
-            if (ent is not null)
-                yield return ent;
+            if(tr.GetObject(e.Value) is T tobj)
+                yield return tobj;
         }
     }
 
diff --git a/src/CAD/IFox.CAD.Shared/ExtensionMethod/JigExTransient.cs b/src/CAD/IFox.CAD.Shared/ExtensionMethod/JigExTransient.cs
index c7532b98ef14c1eecb49358b27cfbbea396f3442..9d3bf6b2d04f06ddf4d2528e2f7288293804db47 100644
--- a/src/CAD/IFox.CAD.Shared/ExtensionMethod/JigExTransient.cs
+++ b/src/CAD/IFox.CAD.Shared/ExtensionMethod/JigExTransient.cs
@@ -8,9 +8,10 @@ public class JigExTransient : IDisposable
 {
     #region 私有字段
     // 整数集,暂时不知道有什么意义
-    IntegerCollection _integerCollection;
+    readonly IntegerCollection _integerCollection;
     // 维护集合
-    HashSet<Entity> _entities;
+    readonly  HashSet<Entity> _entities;
+    readonly TransientManager _manager;
     #endregion
 
     #region 公开属性
@@ -31,7 +32,8 @@ public class JigExTransient : IDisposable
     public JigExTransient()
     {
         _integerCollection = new();
-        _entities = new();
+        _entities = new(); 
+        _manager=TransientManager.CurrentTransientManager;
     }
     #endregion
 
@@ -55,9 +57,7 @@ public void Add(Entity ent, TransientDrawingMode tdm = TransientDrawingMode.Main
     {
         if (_entities.Add(ent))
         {
-            TransientManager
-            .CurrentTransientManager
-            .AddTransient(ent, tdm, 128, _integerCollection);
+            _manager.AddTransient(ent, tdm, 128, _integerCollection);
         }
     }
 
@@ -70,9 +70,7 @@ public void Remove(Entity ent)
     {
         if (!Contains(ent))
             return;
-        TransientManager
-        .CurrentTransientManager
-        .EraseTransient(ent, _integerCollection);
+        _manager.EraseTransient(ent, _integerCollection);
         _entities.Remove(ent);
     }
 
@@ -83,9 +81,7 @@ public void Clear()
     {
         foreach (var ent in _entities)
         {
-            TransientManager
-            .CurrentTransientManager
-            .EraseTransient(ent, _integerCollection);
+            _manager.EraseTransient(ent, _integerCollection);
         }
         _entities.Clear();
     }
@@ -99,9 +95,7 @@ public void Update(Entity ent)
     {
         if (!Contains(ent))
             return;
-        TransientManager
-        .CurrentTransientManager
-        .UpdateTransient(ent, _integerCollection);
+        _manager.UpdateTransient(ent, _integerCollection);
     }
 
     /// <summary>
diff --git a/src/CAD/IFox.CAD.Shared/ExtensionMethod/SymbolTableRecordEx.cs b/src/CAD/IFox.CAD.Shared/ExtensionMethod/SymbolTableRecordEx.cs
index 5a9cdf773c033152fd06799115b61b8eaab17114..15181596a6e06e0a778919652fcc8c8d2e7f47b8 100644
--- a/src/CAD/IFox.CAD.Shared/ExtensionMethod/SymbolTableRecordEx.cs
+++ b/src/CAD/IFox.CAD.Shared/ExtensionMethod/SymbolTableRecordEx.cs
@@ -119,7 +119,7 @@ public static IEnumerable<ObjectId> AddEntity<T>(this BlockTableRecord btr, IEnu
     /// <returns>对象 id 列表</returns>
     public static IEnumerable<ObjectId> AddEntity(this BlockTableRecord btr, params Entity[] ents)
     {
-        return btr.AddEntity(ents);
+        return btr.AddEntity(ents.ToList());
     }
     #endregion
 
diff --git a/src/CAD/IFox.CAD.Shared/Runtime/DBTrans.cs b/src/CAD/IFox.CAD.Shared/Runtime/DBTrans.cs
index b185b76d6e9ffa815cfa451884f94642a8aff8bd..b685cc5d2f9493dd94d42b7e79433f12e042fd64 100644
--- a/src/CAD/IFox.CAD.Shared/Runtime/DBTrans.cs
+++ b/src/CAD/IFox.CAD.Shared/Runtime/DBTrans.cs
@@ -390,6 +390,21 @@ public static implicit operator Transaction(DBTrans tr)
 
     #region 获取对象
     /// <summary>
+    /// 根据对象id获取对象
+    /// </summary>
+    /// <param name="id">对象id</param>
+    /// <param name="openMode">打开模式,默认为只读</param>
+    /// <param name="openErased">是否打开已删除对象,默认为不打开</param>
+    /// <param name="openLockedLayer">是否打开锁定图层对象,默认为不打开</param>
+    /// <returns>数据库DBObject对象</returns>
+    public DBObject GetObject(ObjectId id,
+        OpenMode openMode = OpenMode.ForRead,
+        bool openErased = false,
+        bool openLockedLayer = false)
+    {
+        return Transaction.GetObject(id, openMode, openErased, openLockedLayer);
+    }
+    /// <summary>
     /// 根据对象id获取图元对象
     /// </summary>
     /// <typeparam name="T">要获取的图元对象的类型</typeparam>