diff --git a/插件库/Lskj.Control/GridControlEx.cs b/插件库/Lskj.Control/GridControlEx.cs
index 83bd89a..9523c9c 100644
--- a/插件库/Lskj.Control/GridControlEx.cs
+++ b/插件库/Lskj.Control/GridControlEx.cs
@@ -634,6 +634,7 @@ namespace Lskj.Control
             // 模块级清理只解除事件和菜单引用。GridControl/GridView 的生命周期
             // 由真正的 WinForms 父容器负责，并在 Dispose(bool) 中统一结束。
             DetachGridViewEventHandlers();
+            DisposeOwnedLookupFormsForDispose();
             if (gridViewRightMenu != null)
             {
                 gridViewRightMenu.ReleaseResourcesForDispose();
@@ -683,6 +684,70 @@ namespace Lskj.Control
             LabPicUrlPreview.Detach(gridView);
         }
 
+        private void DisposeOwnedLookupFormsForDispose()
+        {
+            HashSet<Form> forms = new HashSet<Form>();
+            foreach (FrmModelLookUp2 modelLookUp in
+                selectReturnModelLookUpCache.Values.Distinct())
+            {
+                if (modelLookUp != null)
+                {
+                    forms.Add(modelLookUp);
+                }
+            }
+
+            selectReturnModelLookUpCache.Clear();
+            selectReturnDisplaySourceCache.Clear();
+
+            RepositoryItem[] repositoryItems = null;
+            try
+            {
+                if (gridControl != null)
+                {
+                    repositoryItems = gridControl.RepositoryItems
+                        .Cast<RepositoryItem>()
+                        .ToArray();
+                }
+            }
+            catch
+            {
+                // The inner control may already be disposing its repository collection.
+            }
+
+            if (repositoryItems != null)
+            {
+                foreach (RepositoryItemButtonEdit buttonEditor in
+                    repositoryItems.OfType<RepositoryItemButtonEdit>())
+                {
+                    foreach (EditorButton button in buttonEditor.Buttons)
+                    {
+                        Form form = button.Tag as Form;
+                        if (form == null)
+                        {
+                            continue;
+                        }
+
+                        button.Tag = null;
+                        forms.Add(form);
+                    }
+                }
+            }
+
+            foreach (Form form in forms)
+            {
+                try
+                {
+                    if (!form.IsDisposed)
+                    {
+                        form.Dispose();
+                    }
+                }
+                catch
+                {
+                    // A helper form must not prevent its owning grid from closing.
+                }
+            }
+        }
         private void DisposeGridResources()
         {
             if (_gridResourcesDisposed)
@@ -723,6 +788,7 @@ namespace Lskj.Control
             mControlList.Clear();
             ColumnList.Clear();
             AutoPadDataReleColList.Clear();
+            DisposeOwnedLookupFormsForDispose();
             FrozenColumns.Clear();
             ImageList.Clear();
             RepeatedVerificationNames.Clear();
diff --git a/插件库/Lskj.Control/LabelMultiAutoTextEdit4.Designer.cs b/插件库/Lskj.Control/LabelMultiAutoTextEdit4.Designer.cs
index c41a457..499f1ed 100644
--- a/插件库/Lskj.Control/LabelMultiAutoTextEdit4.Designer.cs
+++ b/插件库/Lskj.Control/LabelMultiAutoTextEdit4.Designer.cs
@@ -13,6 +13,10 @@
         /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
         protected override void Dispose(bool disposing)
         {
+            if (disposing)
+            {
+                ReleaseLookupFormForDispose();
+            }
             if (disposing && (components != null))
             {
                 components.Dispose();
diff --git a/插件库/Lskj.Control/LabelMultiAutoTextEdit4.cs b/插件库/Lskj.Control/LabelMultiAutoTextEdit4.cs
index 87dab12..e97a864 100644
--- a/插件库/Lskj.Control/LabelMultiAutoTextEdit4.cs
+++ b/插件库/Lskj.Control/LabelMultiAutoTextEdit4.cs
@@ -315,6 +315,7 @@ namespace Lskj.Control
         /// <param name="dataSource">数据源</param>
         public void InitialFrame()
         {
+            ReleaseLookupFormForDispose();
             _lookUpForm = new FrmModelLookUp2(UnionModuleCodel, IsRadio);
             _lookUpForm.ConfigureColumnMode = ConfigureColumnMode;
             _lookUpForm.ValueField = ValueField;
@@ -332,6 +333,25 @@ namespace Lskj.Control
         /// <para>修改备注：</para>
         /// <para>版本：1.0</para>
         /// </summary>
+        internal void ReleaseLookupFormForDispose()
+        {
+            FrmModelLookUp2 lookUpForm = _lookUpForm;
+            _lookUpForm = null;
+            if (lookUpForm == null || lookUpForm.IsDisposed)
+            {
+                return;
+            }
+
+            try
+            {
+                lookUpForm.Dispose();
+            }
+            catch
+            {
+                // A helper form must not prevent its owner from closing.
+            }
+        }
+
         public void ClearSelectForm()
         {
             // _lookUpForm.ClearSelect();
diff --git a/插件库/Lskj.Control/Model/StaticControl.cs b/插件库/Lskj.Control/Model/StaticControl.cs
index 315c2cb..1fd8246 100644
--- a/插件库/Lskj.Control/Model/StaticControl.cs
+++ b/插件库/Lskj.Control/Model/StaticControl.cs
@@ -126,6 +126,7 @@ namespace Lskj.Control.Model
                 // 控件，不调用 Control.Dispose，也不扫描全局控件集合，因而
                 // 不会影响仍然打开的模块或共享的 GridView 生命周期。
                 ReleaseGridControlRuntimeReferences(moduleControls);
+                ReleaseLookupControlRuntimeReferences(moduleControls);
 
                 foreach (GridView gridView in gridViews)
                 {
@@ -204,6 +205,33 @@ namespace Lskj.Control.Model
             }
         }
 
+        private static void ReleaseLookupControlRuntimeReferences(
+            IEnumerable<WinFormsControl> moduleControls)
+        {
+            if (moduleControls == null)
+            {
+                return;
+            }
+
+            foreach (Lskj.Control.LabelMultiAutoTextEdit4 lookupControl in
+                moduleControls.OfType<Lskj.Control.LabelMultiAutoTextEdit4>())
+            {
+                if (lookupControl == null)
+                {
+                    continue;
+                }
+
+                try
+                {
+                    lookupControl.ReleaseLookupFormForDispose();
+                }
+                catch (Exception exception)
+                {
+                    TraceCleanupFailure("release lookup helper form", exception);
+                }
+            }
+        }
+
         private static List<WinFormsControl> CollectModuleControls(
             WinFormsControl moduleRoot,
             XtraTabPage modulePage)
diff --git a/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.Designer.cs b/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.Designer.cs
index ea4146b..fbcea74 100644
--- a/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.Designer.cs
+++ b/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.Designer.cs
@@ -13,6 +13,10 @@
         /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
         protected override void Dispose(bool disposing)
         {
+            if (disposing)
+            {
+                DisposeDragResources();
+            }
             if (disposing && (components != null))
             {
                 components.Dispose();
diff --git a/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.cs b/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.cs
index a560725..5daacc4 100644
--- a/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.cs
+++ b/插件库/Lskj.Control/MultiModelLookUp/FrmModelLookUp2.cs
@@ -174,6 +174,10 @@ namespace Lskj.Control.MultiModelLookUp
         public bool ReturnCollection;
 
         #endregion
+        private GridDragGrid _dragGrid;
+        private GridDragGrid _backDragGrid;
+        private bool _dragResourcesDisposed;
+
         public FrmModelLookUp2(string ModuleCodel)
         {
             InitializeComponent();
@@ -184,8 +188,8 @@ namespace Lskj.Control.MultiModelLookUp
             this.gcMain.GridControl.ContextMenuStrip = contextMenuStrip1;
             this.gcMain.GridView.DoubleClick += new EventHandler(OnRowCellClick);
             this.gcDetail.GridView.DoubleClick += new EventHandler(OnDoubleClick);
-            GridDragGrid dragGrid = new GridDragGrid(this.gcMain.GridView, this.gcDetail.GridView);
-            GridDragGrid backdragGrid = new GridDragGrid(this.gcDetail.GridView, this.gcMain.GridView);
+            _dragGrid = new GridDragGrid(this.gcMain.GridView, this.gcDetail.GridView);
+            _backDragGrid = new GridDragGrid(this.gcDetail.GridView, this.gcMain.GridView);
             //设置关联模块
             bool result = SetAssociatedModules();
             this.pl_top.Height = 0;
@@ -210,8 +214,8 @@ namespace Lskj.Control.MultiModelLookUp
             this.gcMain.GridView.OptionsBehavior.EditorShowMode = DevExpress.Utils.EditorShowMode.MouseDown;
             this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.OnFormClosing);
             this.gcMain.GridControl.ContextMenuStrip = contextMenuStrip1;
-            GridDragGrid dragGrid = new GridDragGrid(this.gcMain.GridView, this.gcDetail.GridView);
-            GridDragGrid backdragGrid = new GridDragGrid(this.gcDetail.GridView, this.gcMain.GridView);
+            _dragGrid = new GridDragGrid(this.gcMain.GridView, this.gcDetail.GridView);
+            _backDragGrid = new GridDragGrid(this.gcDetail.GridView, this.gcMain.GridView);
             //设置关联模块
             bool result = SetAssociatedModules();
 
@@ -1108,13 +1112,50 @@ namespace Lskj.Control.MultiModelLookUp
         /// <para>修改日期：</para>
         /// <para>修改备注：</para>
         /// <para>版本：1.0</para>
+        private void DisposeDragResources()
+        {
+            if (_dragResourcesDisposed)
+            {
+                return;
+            }
+
+            _dragResourcesDisposed = true;
+            GridDragGrid dragGrid = _dragGrid;
+            _dragGrid = null;
+            if (dragGrid != null)
+            {
+                try
+                {
+                    dragGrid.Dispose();
+                }
+                catch
+                {
+                    // Continue releasing the reverse registration.
+                }
+            }
+
+            GridDragGrid backDragGrid = _backDragGrid;
+            _backDragGrid = null;
+            if (backDragGrid != null)
+            {
+                try
+                {
+                    backDragGrid.Dispose();
+                }
+                catch
+                {
+                    // Drag cleanup must not block form disposal.
+                }
+            }
+        }
+
         private void OnFrmModelLookUp_Disposed(object sender, EventArgs e)
         {
+            DisposeDragResources();
             if (this.DataSource != null)
             {
                 this.DataSource = null;
             }
-            GC.Collect();
         }
         #endregion
 
diff --git a/插件库/Lskj.PubBill/BillModule.cs b/插件库/Lskj.PubBill/BillModule.cs
index 923c9f7..d6b186c 100644
--- a/插件库/Lskj.PubBill/BillModule.cs
+++ b/插件库/Lskj.PubBill/BillModule.cs
@@ -91,6 +91,9 @@ namespace Lskj.PubBill
         private DataTable _detailColumns;
         private bool IsCopying = false;
         private bool _moduleResourcesReleased;
+        private int _preferredSourcePanelWidth;
+        private bool _sourcePanelWidthRestorePending;
+        private bool _restoringSourcePanelWidth;
 
 
         protected DataRow BillRowItem;
@@ -260,6 +263,7 @@ namespace Lskj.PubBill
         public BillModule()
         {
             InitializeComponent();
+            this.ssc_main_top.SizeChanged += OnTopSplitterSizeChanged;
         }
 
         /// <summary>
@@ -275,6 +279,7 @@ namespace Lskj.PubBill
             TryRelease(() => PrintUtil.OnAfterPrint -= new EventHandler(OnReportPrintAfter), "打印回调");
             TryRelease(ReleaseModuleEvents, "模块事件");
             TryRelease(ReleaseModuleDataSources, "模块数据源");
+            TryRelease(DisposeDetachedOwnedSourceControls, "已脱离父容器的来源控件");
             TryRelease(ReleaseRuntimeCollections, "运行时集合");
 
             BillRowItem = null;
@@ -343,6 +348,7 @@ namespace Lskj.PubBill
                         splitContainer.SplitterMoved -= OnDetailsSplitterMoved;
                         splitContainer.SplitterMoved -= OnSpecialMainSplitterMoved;
                         splitContainer.SplitterMoved -= OnSpecialLeftSplitterMoved;
+                        splitContainer.SizeChanged -= OnTopSplitterSizeChanged;
                     }
 
                     SimpleButton commonButton = control as SimpleButton;
@@ -390,6 +396,81 @@ namespace Lskj.PubBill
             }
         }
 
+        private void DisposeDetachedOwnedSourceControls()
+        {
+            // 来源页签切换会通过 Controls.Clear 临时摘下非当前页的控件。
+            // 模块永久关闭时只处理当前 BillModuleModelDic 明确登记的三个
+            // 顶层来源控件，不扫描其他窗体或全局控件树。释放父控件可让
+            // ModuleGridEx 等控件按自身 Dispose 逻辑释放其专属 Grid/BarManager。
+            var ownedSourceControls =
+                new HashSet<System.Windows.Forms.Control>();
+            foreach (BillModuleModel moduleModel in BillModuleModelDic.Values.ToList())
+            {
+                if (moduleModel == null)
+                    continue;
+
+                AddOwnedSourceControl(ownedSourceControls, moduleModel.SourceControl);
+                AddOwnedSourceControl(ownedSourceControls, moduleModel.SourceDetailControl);
+                AddOwnedSourceControl(ownedSourceControls, moduleModel.SourceDetailDetailControl);
+            }
+
+            foreach (System.Windows.Forms.Control sourceControl in ownedSourceControls)
+            {
+                if (sourceControl == null || sourceControl.IsDisposed ||
+                    !IsDetachedFromModuleDisposeChain(sourceControl))
+                {
+                    continue;
+                }
+
+                try
+                {
+                    // 仅释放当前单据持有且已脱离窗体 Dispose 链的实例；
+                    // 不会触碰仍挂在其他 BillModule/Form 下的控件。
+                    sourceControl.Dispose();
+                }
+                catch (Exception exception)
+                {
+                    Debug.WriteLine("释放单据来源控件失败：" + exception);
+                }
+            }
+        }
+
+        private static void AddOwnedSourceControl(
+            HashSet<System.Windows.Forms.Control> target,
+            object sourceControl)
+        {
+            System.Windows.Forms.Control control =
+                sourceControl as System.Windows.Forms.Control;
+            if (target != null && control != null)
+                target.Add(control);
+        }
+
+        private bool IsDetachedFromModuleDisposeChain(
+            System.Windows.Forms.Control control)
+        {
+            System.Windows.Forms.Control current = control;
+            while (current != null)
+            {
+                // 仍在当前模块中时由 FrmMain/BillModule 的正常 Dispose 链处理；
+                // 若被重新挂到其他单据或窗体，也绝不能随当前模块释放。
+                if (current is BillModule ||
+                    current is System.Windows.Forms.Form ||
+                    current is DevExpress.XtraTab.XtraTabPage)
+                    return false;
+
+                try
+                {
+                    current = current.Parent;
+                }
+                catch (ObjectDisposedException)
+                {
+                    return true;
+                }
+            }
+
+            return true;
+        }
+
         private static void AddModuleControlSnapshot(
             List<System.Windows.Forms.Control> target,
             System.Windows.Forms.Control control)
@@ -1015,7 +1096,11 @@ namespace Lskj.PubBill
                             }
                             #endregion
                             #region 加载来源明细
-                            GridControlEx gridDetail = new GridControlEx();
+                            // The concrete source-detail control is selected below.
+                            // Do not allocate a temporary GridControlEx first: replacing
+                            // that unattached instance leaves its GridView subscribed to
+                            // DevExpress global localizer events.
+                            GridControlEx gridDetail = null;
                             if (!string.IsNullOrWhiteSpace(model.DetailModeCode))
                             {
 
@@ -1126,14 +1211,24 @@ namespace Lskj.PubBill
                 // 设置单据来源左侧宽度
                 if (this.BillModel.PanelWidth == 0)
                 {
+                    this._preferredSourcePanelWidth = 0;
+                    this._sourcePanelWidthRestorePending = false;
                     // 隐藏来源
                     this.ssc_main_top.PanelVisibility = SplitPanelVisibility.Panel2;
                 }
                 else
                 {
                     string width = IniHelper.Read(string.Format("bill_width_{0}", this.SysModel.ModuleCode));
-                    if (!string.IsNullOrEmpty(width))
-                        this.ssc_main_top.SplitterPosition = Convert.ToInt32(width);
+                    int savedWidth;
+                    this._preferredSourcePanelWidth =
+                        !string.IsNullOrEmpty(width) &&
+                        int.TryParse(width, out savedWidth) &&
+                        savedWidth > 0
+                            ? savedWidth
+                            : this.BillModel.PanelWidth;
+                    this._sourcePanelWidthRestorePending =
+                        this._preferredSourcePanelWidth > 0;
+                    TryRestoreSourcePanelWidth();
                 }
 
                 // 设置单据来源底部高度
@@ -1155,6 +1250,82 @@ namespace Lskj.PubBill
             }
 
         }
+
+        private void OnTopSplitterSizeChanged(object sender, EventArgs e)
+        {
+            if (!ReferenceEquals(sender, this.ssc_main_top) ||
+                this._moduleResourcesReleased ||
+                this.BillModel == null ||
+                this.BillModel.PanelWidth <= 0)
+            {
+                return;
+            }
+
+            if (this.ssc_main_top.ClientSize.Width <= 1)
+            {
+                if (this._preferredSourcePanelWidth > 0)
+                {
+                    // WindowsFormsHost temporarily measures a projected page at
+                    // zero while moving it between WPF content presenters. Keep
+                    // the last valid position and restore it after reattachment.
+                    this._sourcePanelWidthRestorePending = true;
+                }
+                return;
+            }
+
+            if (this._isInitFinish &&
+                this._sourcePanelWidthRestorePending &&
+                !this.ssc_main_top.Collapsed)
+            {
+                TryRestoreSourcePanelWidth();
+            }
+        }
+
+        private void TryRestoreSourcePanelWidth()
+        {
+            if (this._restoringSourcePanelWidth ||
+                this._preferredSourcePanelWidth <= 0 ||
+                this.ssc_main_top == null ||
+                this.ssc_main_top.IsDisposed ||
+                this.ssc_main_top.Collapsed)
+            {
+                return;
+            }
+
+            int availableWidth = this.ssc_main_top.ClientSize.Width;
+            if (availableWidth <= 1)
+            {
+                this._sourcePanelWidthRestorePending = true;
+                return;
+            }
+
+            int targetWidth = Math.Min(
+                this._preferredSourcePanelWidth,
+                availableWidth - 1);
+            if (targetWidth <= 0)
+            {
+                this._sourcePanelWidthRestorePending = true;
+                return;
+            }
+
+            this._restoringSourcePanelWidth = true;
+            try
+            {
+                this.ssc_main_top.SplitterPosition = targetWidth;
+                this._sourcePanelWidthRestorePending =
+                    targetWidth < this._preferredSourcePanelWidth;
+            }
+            catch (ArgumentOutOfRangeException)
+            {
+                // The DevExpress panels may not have completed their minimum-size
+                // layout yet. The next SizeChanged event retries this instance.
+                this._sourcePanelWidthRestorePending = true;
+            }
+            finally
+            {
+                this._restoringSourcePanelWidth = false;
+            }
+        }
         /// <summary>
         /// <para>说明：初始化系统配置</para>
         /// <para>创建人：龚宇超</para>
@@ -2630,7 +2801,10 @@ namespace Lskj.PubBill
 
 
                 //明细为表格
-                GridControlEx gridDetail = new GridControlEx();
+                // Each branch below supplies the actual source-detail control. Avoid
+                // creating a placeholder GridControlEx that is immediately replaced
+                // and never enters a WinForms dispose chain.
+                GridControlEx gridDetail = null;
 
 
 
@@ -2642,7 +2816,6 @@ namespace Lskj.PubBill
                     if (modelRow == null)
                     {
                         MessageUtil.Show($"没有找到编号为 {model.DetailModeCode} 的模块信息");
-                        gridDetail.Parent = gridDetail;
                         continue;
                     }
 
@@ -8252,11 +8425,25 @@ namespace Lskj.PubBill
         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
         private void OnTopSplitterMoved(object sender, EventArgs e)
         {
-            if (this._isInitFinish)// 是否为初始化创建
+            if (this._restoringSourcePanelWidth)
             {
+                return;
+            }
+
+            if (this._isInitFinish &&
+                this.SysModel != null &&
+                this.ssc_main_top.ClientSize.Width > 1 &&
+                this.ssc_main_top.SplitterPosition > 0)// 是否为初始化创建
+            {
+                this._preferredSourcePanelWidth =
+                    this.ssc_main_top.SplitterPosition;
+                this._sourcePanelWidthRestorePending = false;
                 IniHelper.Write(string.Format("bill_width_{0}", this.SysModel.ModuleCode), this.ssc_main_top.SplitterPosition + "");
             }
-            this.gcMain.gridControl.Refresh();
+            if (this.gcMain != null && this.gcMain.gridControl != null)
+            {
+                this.gcMain.gridControl.Refresh();
+            }
         }
         /// <summary>
         /// <para>说明：分割条移动保存位置</para>